https://www.javabrahman.com/RSS for NodeSat, 11 Apr 2026 00:17:16 GMTSun, 14 Apr 2024 17:12:41 GMTContinue reading How to set up a new Koa 2 App for REST API development on Node.js →]]>https://www.javabrahman.com/node-js/how-to-set-up-a-new-koa-2-app-for-rest-api-development-on-node-jshow-to-set-up-a-new-koa-2-app-for-rest-api-development-on-node-jsFri, 14 Sep 2018 00:00:00 GMTContinue reading Java 9 - How to create immutable collections using List.of, Set.of, Map.of, Map.ofEntries methods with examples →]]>https://www.javabrahman.com/java-9-beyond/java-9-how-to-create-immutable-collections-using-list-of-set-of-map-of-map-ofentries-methods-with-examplesjava-9-how-to-create-immutable-collections-using-list-of-set-of-map-of-map-ofentries-methods-with-examplesTue, 24 Apr 2018 00:00:00 GMTContinue reading Overview of New features in Java 10 →]]>https://www.javabrahman.com/java-9-beyond/overview-of-new-features-in-java-10overview-of-new-features-in-java-10Tue, 27 Mar 2018 00:00:00 GMTContinue reading Node.js How to resolve error An exception occurred while executing watcher 'Pug/Jade'. Watcher has been disabled. →]]>https://www.javabrahman.com/error-handling/node-js-how-to-resolve-error-an-exception-occurred-while-executing-watcher-pugjade-watcher-has-been-disablednode-js-how-to-resolve-error-an-exception-occurred-while-executing-watcher-pugjade-watcher-has-been-disabledTue, 11 Jul 2017 00:00:00 GMTContinue reading Understanding Thread Life Cycle, Thread States in Java | Tutorial with Examples →]]>https://www.javabrahman.com/corejava/understanding-thread-life-cycle-thread-states-in-java-tutorial-with-examplesunderstanding-thread-life-cycle-thread-states-in-java-tutorial-with-examplesMon, 19 Jun 2017 00:00:00 GMTContinue reading Functional Interfaces in Java 8 Explained →]]>https://www.javabrahman.com/latest-in-tech/whats-new-in-latest-version-of-android-operating-system-android-owhats-new-in-latest-version-of-android-operating-system-android-oFri, 19 May 2017 00:00:00 GMTContinue reading Java Multithreading Basics | Creating and running threads in Java with examples →]]>https://www.javabrahman.com/corejava/java-multithreading-basics-creating-and-running-threads-in-java-with-examplesjava-multithreading-basics-creating-and-running-threads-in-java-with-examplesWed, 17 May 2017 00:00:00 GMTContinue reading How to delete a file or directory in Java using NIO API →]]>https://www.javabrahman.com/corejava/how-to-delete-a-file-or-directory-in-java-using-nio-apihow-to-delete-a-file-or-directory-in-java-using-nio-apiSun, 14 May 2017 00:00:00 GMTPath and Files classes from the Java NIO API to fetch the attribute information ... Continue reading How to get file attributes or permissions in Java with examples →]]>https://www.javabrahman.com/quick-tips/how-to-get-file-attributes-or-permissions-in-java-with-exampleshow-to-get-file-attributes-or-permissions-in-java-with-examplesThu, 04 May 2017 00:00:00 GMTContinue reading How to check for existence of a file in Java →]]>https://www.javabrahman.com/quick-tips/how-to-check-for-existence-of-a-file-in-javahow-to-check-for-existence-of-a-file-in-javaTue, 02 May 2017 00:00:00 GMTjava.lang.Iterable<T> on a class to enable for-each loop based iteration through the collection of objects stored in that class ... Continue reading Implementing Iterable interface in Java to enable for-each loop based iteration →]]>https://www.javabrahman.com/corejava/implementing-iterable-interface-in-java-to-enable-for-each-loop-based-iterationimplementing-iterable-interface-in-java-to-enable-for-each-loop-based-iterationMon, 01 May 2017 00:00:00 GMTContinue reading How to count number of files in a directory in Java | File.list() vs NIO's DirectoryStream →]]>https://www.javabrahman.com/corejava/how-to-count-number-of-files-in-a-directory-in-java-file-list-vs-nios-directorystreamhow-to-count-number-of-files-in-a-directory-in-java-file-list-vs-nios-directorystreamFri, 28 Apr 2017 00:00:00 GMTContinue reading Java 8 How to use Collectors summarizingInt, summarizingLong, summarizingDouble with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-collectors-summarizingint-summarizinglong-summarizingdouble-with-examplesjava-8-how-to-use-collectors-summarizingint-summarizinglong-summarizingdouble-with-examplesMon, 24 Apr 2017 00:00:00 GMTContinue reading Java 8 – Java 8 – How to use Collectors.mapping Collector with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-collectors-mapping-collector-with-examplesjava-8-how-to-use-collectors-mapping-collector-with-examplesSun, 16 Apr 2017 00:00:00 GMTContinue reading Functional Interfaces in Java 8 Explained →]]>https://www.javabrahman.com/corejava/the-complete-java-enums-tutorial-with-examplesthe-complete-java-enums-tutorial-with-examplesSat, 08 Apr 2017 00:00:00 GMTContinue reading Java 8 – How to use Collectors.toCollection Collector with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-collectors-tocollection-collector-with-examplesjava-8-how-to-use-collectors-tocollection-collector-with-examplesSat, 08 Apr 2017 00:00:00 GMTContinue reading Java 8 How to use Collectors averagingInt, averagingLong, averagingDouble with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-collectors-averagingint-averaginglong-averagingdouble-with-examplesjava-8-how-to-use-collectors-averagingint-averaginglong-averagingdouble-with-examplesSat, 01 Apr 2017 00:00:00 GMTContinue reading Java 8 - How to use Collectors.collectingAndThen Collector with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-collectors-collectingandthen-method-with-examplesjava-8-how-to-use-collectors-collectingandthen-method-with-examplesSun, 26 Mar 2017 00:00:00 GMTContinue reading Java 8 Grouping with Collectors | groupingBy method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-grouping-with-collectors-groupingby-method-tutorial-with-examplesjava-8-grouping-with-collectors-groupingby-method-tutorial-with-examplesFri, 24 Mar 2017 00:00:00 GMTContinue reading Java 8 - How to use range(), rangeClosed() methods of IntStream, LongStream with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-use-range-rangeclosed-methods-of-intstream-longstream-with-examplesjava-8-how-to-use-range-rangeclosed-methods-of-intstream-longstream-with-examplesThu, 16 Mar 2017 00:00:00 GMTContinue reading Java 8 Joining with Collectors | Collectors.joining method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-joining-with-collectors-collectors-joining-method-tutorial-with-examplesjava-8-joining-with-collectors-collectors-joining-method-tutorial-with-examplesMon, 13 Mar 2017 00:00:00 GMTContinue reading Java Program to check for Automorphic Number →]]>https://www.javabrahman.com/gen-java-programs/java-program-to-check-for-automorphic-numberjava-program-to-check-for-automorphic-numberWed, 01 Mar 2017 00:00:00 GMTContinue reading Java 8 Finding max/min with Collectors | maxBy, minBy methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-finding-maxmin-with-collectors-maxby-minby-methods-tutorial-with-examplesjava-8-finding-maxmin-with-collectors-maxby-minby-methods-tutorial-with-examplesSun, 26 Feb 2017 00:00:00 GMTContinue reading Java 8 Counting with Collectors | Collectors.counting method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-counting-with-collectors-collectors-counting-method-tutorial-with-examplesjava-8-counting-with-collectors-collectors-counting-method-tutorial-with-examplesSat, 25 Feb 2017 00:00:00 GMTContinue reading Java 8 Partitioning with Collectors | partitioningBy method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-partitioning-with-collectors-partitioningby-method-tutorial-with-examplesjava-8-partitioning-with-collectors-partitioningby-method-tutorial-with-examplesFri, 24 Feb 2017 00:00:00 GMTContinue reading Java 8 - java.util.stream.Collector basics tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-java-util-stream-collector-basics-tutorial-with-examplesjava-8-java-util-stream-collector-basics-tutorial-with-examplesMon, 13 Feb 2017 00:00:00 GMTjava.util.StringTokenizer class to parse a String containing delimited data tokens. It first explains what a StringTokenizer does along with the basic concepts of delimiters and tokens. Next it uses a Java code example to show ... Continue reading How to use StringTokenizer to parse Strings into tokens in Java | Tutorial with examples →]]>https://www.javabrahman.com/corejava/how-to-use-stringtokenizer-to-parse-strings-into-tokens-in-java-tutorial-with-exampleshow-to-use-stringtokenizer-to-parse-strings-into-tokens-in-java-tutorial-with-examplesMon, 06 Feb 2017 00:00:00 GMTContinue reading Understanding Java 8 Streams Operations | Intermediate and Terminal Operations | Tutorial with examples →]]>https://www.javabrahman.com/java-8/understanding-java-8-streams-operations-intermediate-and-terminal-operations-tutorial-with-examplesunderstanding-java-8-streams-operations-intermediate-and-terminal-operations-tutorial-with-examplesMon, 30 Jan 2017 00:00:00 GMThttps://www.javabrahman.com/gen-java-programs/java-program-to-convert-from-fahrenheit-to-celsius-with-examplesjava-program-to-convert-from-fahrenheit-to-celsius-with-examplesWed, 25 Jan 2017 00:00:00 GMThttps://www.javabrahman.com/corejava/converting-an-array-to-listor-arraylist-in-java-options-and-their-analysisconverting-an-array-to-listor-arraylist-in-java-options-and-their-analysisMon, 23 Jan 2017 00:00:00 GMTContinue reading Java 8 java.time.temporal.TemporalAdjuster tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-java-time-temporal-temporaladjuster-tutorial-with-examplesjava-8-java-time-temporal-temporaladjuster-tutorial-with-examplesFri, 13 Jan 2017 00:00:00 GMTContinue reading Java 8 - How to Day of Week, Month in Spanish, French for any date using Locale →]]>https://www.javabrahman.com/java-8/java-8-how-to-get-day-of-week-month-in-spanish-french-for-any-date-using-localejava-8-how-to-get-day-of-week-month-in-spanish-french-for-any-date-using-localeMon, 02 Jan 2017 00:00:00 GMTContinue reading Java 8 - How to get day of week for a given date using java.time.DayOfWeek with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-get-day-of-week-for-a-given-date-using-java-time-dayofweek-with-examplesjava-8-how-to-get-day-of-week-for-a-given-date-using-java-time-dayofweek-with-examplesMon, 02 Jan 2017 00:00:00 GMTContinue reading Understanding equals and hashcode contract when using collections in Java →]]>https://www.javabrahman.com/corejava/understanding-equals-and-hashcode-contract-when-using-collections-in-javaunderstanding-equals-and-hashcode-contract-when-using-collections-in-javaMon, 26 Dec 2016 00:00:00 GMTget IP address and hostname in Java of the localhost or server machine using java.net.InetAddress class with InetAddress.getIpAddress() and InetAddress.getHostname() methods with java code example ... Continue reading How to get IP Address and Hostname in Java using InetAddress with example →]]>https://www.javabrahman.com/corejava/how-to-get-ip-address-and-hostname-in-java-using-inetaddress-with-examplehow-to-get-ip-address-and-hostname-in-java-using-inetaddress-with-exampleSat, 24 Dec 2016 00:00:00 GMTContinue reading Java program for matrix multiplication of dynamically sized matrices →]]>https://www.javabrahman.com/gen-java-programs/java-program-for-matrix-multiplication-of-dynamically-sized-matricesjava-program-for-matrix-multiplication-of-dynamically-sized-matricesFri, 23 Dec 2016 00:00:00 GMTContinue reading Java 8 - Working with LocalDate, LocalTime, LocalDateTime - tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-working-with-localdate-localtime-localdatetime-tutorial-with-examplesjava-8-working-with-localdate-localtime-localdatetime-tutorial-with-examplesMon, 19 Dec 2016 00:00:00 GMTContinue reading Java program for matrix addition of dynamically sized matrices →]]>https://www.javabrahman.com/gen-java-programs/java-program-for-matrix-addition-of-dynamically-sized-matricesjava-program-for-matrix-addition-of-dynamically-sized-matricesSun, 18 Dec 2016 00:00:00 GMTlast day of a given month as a java.time.LocalDate instance. It then shows how to get the last working day of a month as a LocalDate when considering a 5-day work-week with Saturday and Sunday as weekly off days ... Continue reading Java 8 - How to get last day / last working day of a month as LocalDate →]]>https://www.javabrahman.com/java-8/java-8-how-to-get-last-day-last-working-day-of-a-month-as-localdatejava-8-how-to-get-last-day-last-working-day-of-a-month-as-localdateSat, 17 Dec 2016 00:00:00 GMThttps://www.javabrahman.com/gen-java-programs/java-program-to-check-if-a-number-is-harshad-number-or-niven-numberjava-program-to-check-if-a-number-is-harshad-number-or-niven-numberFri, 16 Dec 2016 00:00:00 GMTcloning in java, explains main classes and interfaces participating in cloning, shows how to make shallow copies using super.clone() with a java code example, explains disadvantage of shallow copying, and then shows how to create deep copies with java code example, and detailed explanation of code ... Continue reading Cloning in Java | Shallow Copy and Deep Copy tutorial with examples →]]>https://www.javabrahman.com/corejava/cloning-in-java-shallow-copy-and-deep-copy-tutorial-with-examplescloning-in-java-shallow-copy-and-deep-copy-tutorial-with-examplesTue, 13 Dec 2016 00:00:00 GMTContinue reading Just Pick up and Walk Out with Amazon Go | Tech-enabled futuristic retail stores have arrived →]]>https://www.javabrahman.com/latest-in-tech/just-pick-up-and-walk-out-with-amazon-go-tech-enabled-futuristic-retail-stores-have-arrivedjust-pick-up-and-walk-out-with-amazon-go-tech-enabled-futuristic-retail-stores-have-arrivedSun, 11 Dec 2016 00:00:00 GMTjava.util.TimeZone to java.time.ZoneId in Java 8 with examples. It also shows how to convert from a ZoneId to a TimeZone ... Continue reading How to convert java.util.TimeZone to java.time.ZoneId in Java 8 | tutorial with examples →]]>https://www.javabrahman.com/java-8/how-to-convert-java-util-timezone-to-java-time-zoneid-in-java-8-tutorial-with-exampleshow-to-convert-java-util-timezone-to-java-time-zoneid-in-java-8-tutorial-with-examplesSat, 10 Dec 2016 00:00:00 GMTJava 8's new Date Time API, or java.time package, explains the motivation for building the new API, API's core design ideas, lists out Java 8's important Date-Time classes with links to individual tutorials for each ... Continue reading Overview of Java 8's New Date-Time API | java.time package tutorial →]]>https://www.javabrahman.com/java-8/overview-of-java-8-new-date-time-api-java-time-package-tutorialoverview-of-java-8-new-date-time-api-java-time-package-tutorialFri, 09 Dec 2016 00:00:00 GMTclone() has protected access in java.lang.Object ... Continue reading Java - How to resolve compiler error - clone() has protected access in java.lang.Object → ]]>https://www.javabrahman.com/error-handling/java-resolve-compiler-error-clone-protected-access-java-lang-objectjava-resolve-compiler-error-clone-protected-access-java-lang-objectFri, 02 Dec 2016 00:00:00 GMTContinue reading Iterative and Recursive Binary Search Algorithm implementation in Java →]]>https://www.javabrahman.com/algorithms-in-java/iterative-and-recursive-binary-search-algorithm-implementation-in-javaiterative-and-recursive-binary-search-algorithm-implementation-in-javaThu, 01 Dec 2016 00:00:00 GMTZonedDateTime and ZoneId classes, and practical Java 8 code examples of scenarios showing how to use time zones in code ... Continue reading Working with Time Zones in Java 8 | ZonedDateTime, ZoneId tutorial with examples →]]>https://www.javabrahman.com/java-8/working-with-time-zones-in-java-8-zoneddatetime-zoneid-tutorial-with-examplesworking-with-time-zones-in-java-8-zoneddatetime-zoneid-tutorial-with-examplesWed, 30 Nov 2016 00:00:00 GMTjava.util.Date to java.time.LocalDate and java.time.LocalDateTime with examples ... Continue reading Java 8 - How to convert java.util.Date to java.time.LocalDate, java.time.LocalDateTime with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-convert-java-util-date-to-java-time-localdate-java-time-localdatetime-with-examplesjava-8-how-to-convert-java-util-date-to-java-time-localdate-java-time-localdatetime-with-examplesWed, 30 Nov 2016 00:00:00 GMTJava 8 Stream API's peek() method in depth. It first explains the Stream.peek() method's definition and intended use.This will be followed by understanding the method's intermediate and non-interfering nature. Lastly, we will look at the Java 8 code showing a working example ... Continue reading Java 8 - How to 'peek' into a running Stream| Stream.peek method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-how-to-peek-into-a-running-stream-peek-method-tutorial-with-examplesjava-8-how-to-peek-into-a-running-stream-peek-method-tutorial-with-examplesWed, 09 Nov 2016 00:00:00 GMTIn this 4^th and last part of Java 8 Collection Enhancements Series, I have covered the new default methods introduced in Map interface in Java 8. We start off with understanding the concept of multi-value maps. Next the tutorial covers the definition and usage of 5 new default methods in Java 8's Map interface - forEach(), replaceAll(), computeIfAbsent(), computeIfPresent() and getOrDefault() method ... Continue reading Java 8 - Map's computeIfAbsent, computeIfPresent, getOrDefault methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-maps-computeifabsent-computeifpresent-getordefault-methods-tutorial-with-examplesjava-8-maps-computeifabsent-computeifpresent-getordefault-methods-tutorial-with-examplesFri, 04 Nov 2016 00:00:00 GMTIn this part 3 of 4 part Java 8 Collection Enhancements Series, I will be looking at java.util.List interface and will explain the new default methods which have been introduced in the interface in Java 8 viz. List.sort() and List.replaceAll(). We will understand the working of these two methods along with understanding their usage with examples .... ... Continue reading Java 8 - List.sort, List.replaceAll methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-list-sort-list-replaceall-methods-tutorial-with-examplesjava-8-list-sort-list-replaceall-methods-tutorial-with-examplesThu, 27 Oct 2016 00:00:00 GMTContinue reading Java 9 release set to be further delayed for 4 months to July 2017 courtesy Jigsaw →]]>https://www.javabrahman.com/java-9-beyond/java-9-release-set-delayed-4-months-july-2017-courtesy-jigsawjava-9-release-set-delayed-4-months-july-2017-courtesy-jigsawWed, 26 Oct 2016 00:00:00 GMTIn this part 2 of 4 part Java 8 Collection Enhancements Series, I will be explaining the new default method removeIf() which has been added to the java.util.Collection interface. We will start off with looking at how element removal from a Collection worked until Java 7. We will then look at the new Collection.removeIf() method introduced in Java 8. We will also understand the performance improvement ... Continue reading Java 8 - Collection.removeIf method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-collection-removeif-method-tutorial-with-examplesjava-8-collection-removeif-method-tutorial-with-examplesTue, 25 Oct 2016 00:00:00 GMTIn this part 1 of 4 part Java 8 Collection Enhancements Series, I will be covering the new default method named forEach() introduced in java.lang.Iterable interface with examples. This will be followed by understanding the new default implementation of Iterator interface's remove() method, and how it makes implementing the Iterator easier than before ... Continue reading Java 8 - Iterable.forEach, Iterator.remove methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-iterable-foreach-iterator-remove-methods-tutorial-with-examplesjava-8-iterable-foreach-iterator-remove-methods-tutorial-with-examplesFri, 21 Oct 2016 00:00:00 GMThttps://www.javabrahman.com/gen-java-programs/java-program-check-armstrong-numberjava-program-check-armstrong-numberMon, 17 Oct 2016 00:00:00 GMTreview of 5 best books for learning Java 8 is based on my experience with reading and referring each of these books ... Continue reading 5 Best Books for learning Java 8 Reviewed → ]]>https://www.javabrahman.com/java-8/5-best-books-learning-java-8-reviewed5-best-books-learning-java-8-reviewedMon, 17 Oct 2016 00:00:00 GMTIntroduction - This tutorial first defines a palindrome. It then provides a short algorithm to determine whether a sequence of characters or numbers is a palindrome. Lastly, it provides the Java code for determining whether the given number or string is a palindrome or not along with explanation of the code ... Continue reading Functional Interfaces in Java 8 Explained →]]>https://www.javabrahman.com/gen-java-programs/java-program-check-if-number-string-is-palindromejava-program-check-if-number-string-is-palindromeThu, 06 Oct 2016 00:00:00 GMThow to convert String date to java.time.LocalDate instance using the parse() method of java.time.DateTimeFormatter class. It then shows how to use the format() method of LocalDate class to convert LocalDate instance to a String in the specified format. ... Continue reading Java 8 - How to convert String to LocalDate and LocalDate to String in specific format →]]>https://www.javabrahman.com/java-8/java-8-how-to-convert-string-to-localdate-and-localdate-to-string-in-specific-formatjava-8-how-to-convert-string-to-localdate-and-localdate-to-string-in-specific-formatWed, 28 Sep 2016 00:00:00 GMTContinue reading Java 8 - How to count words in a text file in java using NIO and Streams API →]]>https://www.javabrahman.com/java-8/java-8-how-to-count-words-in-a-text-file-in-java-using-nio-and-streams-apijava-8-how-to-count-words-in-a-text-file-in-java-using-nio-and-streams-apiThu, 22 Sep 2016 00:00:00 GMTIntroduction - Java 8 Reducing with Streams tutorial starts with explaining the concept of reducing in Streams. It then looks at the Streams API's reduce() method and how it can be used to perform reduction operations on streams of data. Java 8 code examples are used to demonstrate the method's usage ... Continue reading Java 8 Reducing with Streams | reduce method tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-reducing-with-streams-reduce-method-tutorial-with-examplesjava-8-reducing-with-streams-reduce-method-tutorial-with-examplesWed, 21 Sep 2016 00:00:00 GMTIntroduction - This is a YouTube video tutorial showing the working of Radix Sort Algorithm with whiteboard animation. It also does a detailed code walk-through of Radix Sort implementation in Java. The code shown in the video is present in the post for reference ... ... Continue reading Radix Sort Algorithm-Whiteboard Video Tutorial with Java Code Walkthrough →]]>https://www.javabrahman.com/algorithms-in-java/radix-sort-algorithm-whiteboard-video-tutorial-with-java-code-walkthroughradix-sort-algorithm-whiteboard-video-tutorial-with-java-code-walkthroughTue, 20 Sep 2016 00:00:00 GMTIntroduction - This tutorial explains how to create infinite streams using the Java 8 Stream API's iterate() and generate() methods with examples to show their usage ... Continue reading Java 8 Streams API - creating infinite streams with iterate and generate methods →]]>https://www.javabrahman.com/java-8/java-8-streams-api-creating-infinite-streams-with-iterate-and-generate-methodsjava-8-streams-api-creating-infinite-streams-with-iterate-and-generate-methodsSat, 17 Sep 2016 00:00:00 GMTIntroduction - This tutorial explains the Java 8 Stream API's findAny() and findFirst() methods with examples to show their usage ... Continue reading Java 8 Streams API - findAny, findFirst methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-finding-with-streams-findfirst-findany-methods-tutorial-examplesjava-8-finding-with-streams-findfirst-findany-methods-tutorial-examplesFri, 16 Sep 2016 00:00:00 GMTLocalDate, LocalTime and LocalDateTime ... Continue reading How to perform elementary Date-Time calculations in Java 8 →]]>https://www.javabrahman.com/java-8/perform-elementary-date-time-calculations-java-8perform-elementary-date-time-calculations-java-8Tue, 13 Sep 2016 00:00:00 GMTIntroduction - Java 8 Matching with Streams tutorial explains how to match elements in a stream using the allMatch, anyMatch and noneMatch methods provided by the Streams API. It uses detailed code examples to show the usage of each of the Stream API's methods for matching ... Continue reading Java 8 Matching with Streams - allMatch, anyMatch, noneMatch methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-matching-with-streams-allmatch-anymatch-nonematch-methods-tutorial-examplesjava-8-matching-with-streams-allmatch-anymatch-nonematch-methods-tutorial-examplesSat, 10 Sep 2016 00:00:00 GMTjava.nio.file.NoSuchFileException when using NIO API in Java ... Continue reading Functional Interfaces in Java 8 Explained →]]>https://www.javabrahman.com/error-handling/java-resolve-error-java-nio-file-nosuchfileexceptionjava-resolve-error-java-nio-file-nosuchfileexceptionWed, 07 Sep 2016 00:00:00 GMTContinue reading How to recursively list all files in a directory in Java with examples →]]>https://www.javabrahman.com/corejava/java-recursively-list-files-subdirectories-directory-examplesjava-recursively-list-files-subdirectories-directory-examplesTue, 06 Sep 2016 00:00:00 GMTContinue reading Once ubiquitous Applet is finally been prepped for an exit come Java 9 →]]>https://www.javabrahman.com/java-9-beyond/ubiquitous-applet-finally-prepped-exit-come-java-9ubiquitous-applet-finally-prepped-exit-come-java-9Mon, 05 Sep 2016 00:00:00 GMThttps://www.javabrahman.com/corejava/copy-move-file-java-one-location-another-examplescopy-move-file-java-one-location-another-examplesSun, 04 Sep 2016 00:00:00 GMTContinue reading How to Print array in Java using Arrays.toString,Arrays.deepToString, Arrays.stream methods →]]>https://www.javabrahman.com/corejava/how-to-print-array-in-java-using-arrays-tostring-deeptostring-stream-methodshow-to-print-array-in-java-using-arrays-tostring-deeptostring-stream-methodsSat, 03 Sep 2016 00:00:00 GMTjava.util.Comparator has evolved into an enhanced comparison and ordering utility in Java 8.Comparators in Java 8 now support declarations via lambda expressions as it is a Functional Interface. Comparator has a new method comparing() which uses uses an instance of java.util.function.Function functional interface, specified using lambda expression or its equivalent method reference, for Comparator instance creation. In addition, multiple sort criteria can now be clubbed using comparing() with a thenComparing() method. The range of new capabilities is rounded off with methods for using natural comparison order, null-valued sort key handling and sort order reversal ... Continue reading The Complete Java 8 Comparator Tutorial with examples →]]>https://www.javabrahman.com/java-8/the-complete-java-8-comparator-tutorial-with-examplesthe-complete-java-8-comparator-tutorial-with-examplesFri, 02 Sep 2016 00:00:00 GMTContinue reading How to get user's current working directory or Java Execution Path → ]]>https://www.javabrahman.com/corejava/how-to-get-java-execution-path-or-user-current-working-directoryhow-to-get-java-execution-path-or-user-current-working-directoryWed, 24 Aug 2016 00:00:00 GMTjava.time.LocalDate instances using java.time.Period class. It then shows how to get the interval between the two LocalDate instances in hours, days and years using java.time.temporal.ChronoUnit class ... Continue reading java 8 - how to calculate difference between two java.time.LocalDate instances →]]>https://www.javabrahman.com/java-8/java-8-how-to-calculate-difference-between-two-java-time-localdate-instancesjava-8-how-to-calculate-difference-between-two-java-time-localdate-instancesMon, 22 Aug 2016 00:00:00 GMTContinue reading Java 8 - How to get current machine timestamp using java.time.Instant → ]]>https://www.javabrahman.com/java-8/java-8-how-to-get-current-machine-timestamp-using-java-time-instantjava-8-how-to-get-current-machine-timestamp-using-java-time-instantSun, 21 Aug 2016 00:00:00 GMTStream.toArray() method with explanation of the code. ... Continue reading Java 8 code to convert Stream to Array using Stream.toArray method →]]>https://www.javabrahman.com/java-8/java-8-code-convert-stream-array-using-stream-toarray-methodjava-8-code-convert-stream-array-using-stream-toarray-methodSun, 21 Aug 2016 00:00:00 GMTContinue reading Dependency Inversion Principle explained with example in Java →]]>https://www.javabrahman.com/programming-principles/dependency-inversion-principle-example-javadependency-inversion-principle-example-javaWed, 17 Aug 2016 00:00:00 GMTContinue reading Deprecation in Java, @Deprecated annotation and Javadoc tag tutorial with examples →]]>https://www.javabrahman.com/corejava/deprecation-java-deprecated-annotation-javadoc-tag-tutorial-examplesdeprecation-java-deprecated-annotation-javadoc-tag-tutorial-examplesTue, 16 Aug 2016 00:00:00 GMTfat interface is picked for a use case in Java, it is analysed and then refactored in line with the interface segregation principle to arrive at lean interfaces. What is Interface Segregation Principle - Robert C. Martin has ... Continue reading Interface Segregation Principle explained with example in Java →]]>https://www.javabrahman.com/programming-principles/interface-segregation-principle-explained-examples-javainterface-segregation-principle-explained-examples-javaSun, 14 Aug 2016 00:00:00 GMTJava Exception Hierarchy Class Diagram ... Continue reading Understanding exception hierarchy in Java - a tutorial →]]>https://www.javabrahman.com/corejava/understanding-exception-hierarchy-java-tutorialunderstanding-exception-hierarchy-java-tutorialWed, 10 Aug 2016 00:00:00 GMTContinue reading @Override annotation in Java - tutorial with examples →]]>https://www.javabrahman.com/corejava/override-annotation-java-tutorial-examplesoverride-annotation-java-tutorial-examplesSun, 07 Aug 2016 00:00:00 GMTContinue reading Facebook messenger introduces end-to-end encryption with Mission Impossible-styled self-destructing messages →]]>https://www.javabrahman.com/latest-in-tech/facebook-messenger-introduces-end-to-end-encryption-disappearing-messagesfacebook-messenger-introduces-end-to-end-encryption-disappearing-messagesWed, 13 Jul 2016 00:00:00 GMTJava ranked number #1 programming language for the second month running. As per the TIOBE Programming Community Index^[1] Java has been ranked at the premier position. This is the second month running that Java has been ranked at this position. Last month, Jan'2016, it had regained the top spot after lagging behind C language since Jan'2015. It took one year for Java to bounce back with ~6% gain ... Continue reading Java ranked #1 programming language →]]>https://www.javabrahman.com/latest-in-tech/java-ranked-no-1-programming-language-tiobejava-ranked-no-1-programming-language-tiobeMon, 08 Feb 2016 00:00:00 GMTThis article explains Composite design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Composite Design Pattern is a structural design pattern among the Gang Of Four(GOF) Design Patterns. What is Composite Design Pattern: Composite Design pattern is ideal for designing a system where part-whole hierarchies exist, and where the part and the whole components are to be treated in the system uniformly. Composite design pattern treats both the parts and the whole in the same way. This is very beneficial for handling ... Continue reading Composite Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/composite-design-pattern-in-javacomposite-design-pattern-in-javaWed, 20 Jan 2016 00:00:00 GMTIntroduction: This article explains the Euclidean Algorithm for Greatest Common Divisor(GCD) of 2 numbers. It then shows how to implement Euclidean Algorithm in Java with variations such as - GCD of two numbers iteratively, GCD of 2 numbers recursively and GCD of n numbers recursively. Euclidean Algorithm for Greatest Common Divisor Basic Version - Subtraction Based: The basic algorithm given by Euclid simplifies the GCD determination process by using the principle that the greatest common divisor of two numbers does not change if the larger of the two numbers is replaced by the difference ... Continue reading Euclidean Algorithm for Greatest Common Divisor (GCD) in Java →]]>https://www.javabrahman.com/algorithms-in-java/euclidean-algorithm-for-greatest-common-divisor-gcd-in-javaeuclidean-algorithm-for-greatest-common-divisor-gcd-in-javaTue, 19 Jan 2016 00:00:00 GMTIntroduction:This article explains Liskov Substitution Principle with examples in Java, the Circle-Ellipse Problem and the relation of this principle with Open/Closed Principle. Liskov Substitution Principal as defined by Barbara Liskov & Jeannette Wing: Φ(x) be a property provable about objects x of type T. Then Φ(y)should be true for objects y of type S where S is a subtype of T. Explanation of the Liskov Substitution Principle: As the name suggests, Liskov Substitution Principle prescribes substitutability of a class by its subclass. Broadly put, a class can be replaced by its subclass in all practical usage scenarios. This is actually in line with what Java also allows. A superclass reference can hold a subclass object i.e. superclass can be replaced by subclass in a superclass reference at any time. So, Java inheritance mechanism follows Liskov Substitution Principle. Lets see an example in Java ... Continue reading Liskov Substitution Principal explained with examples in Java →]]>https://www.javabrahman.com/programming-principles/liskov-substitution-principal-java-exampleliskov-substitution-principal-java-exampleSat, 16 Jan 2016 00:00:00 GMTThis article explains Iterator design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Iterator Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. What is Iterator Design Pattern: Iterator design pattern implements the logic for sequential access of a collection of data outside of the collection(aka an aggregate) itself. This decouples the iteration logic from the collection implementation. Defining an abstract interface for an iterator makes it possible to have multiple ways of iterating the same collection. Lets say we have ... Continue reading Iterator Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/iterator-design-pattern-in-javaiterator-design-pattern-in-javaTue, 12 Jan 2016 00:00:00 GMTIntroduction: This article on Imperative versus Functional Programming starts off with defining imperative and functional programming paradigms. It then explains how these two paradigms differ considering various factors related to their approach, usage and applicability and the road ahead. What is Imperative Programming: Imperative Programming, also known as procedural programming, is the most prevalent programming style in use today. A program in imperative language specifies how the desired result is to be obtained. I.e. the program specifies the exact steps to be performed to achieve the desired outcome. Common examples ... Continue reading Imperative versus Functional Programming Paradigms - a conceptual article →]]>https://www.javabrahman.com/programming-principles/imperative-versus-functional-programming-paradigms-conceptualimperative-versus-functional-programming-paradigms-conceptualMon, 11 Jan 2016 00:00:00 GMTThis article explains Chain of Responsibility design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Chain of Responsibility Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. What is Chain of Responsibility Design Pattern: Chain of Responsibility Pattern decouples the handler of a request from its sender by providing multiple potential handlers chained in a sequence. As the request reaches the first handler object, the object checks if it can handle this request. If yes, it handles the request, else it ... Continue reading Chain of Responsibility Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/chain-of-responsibility-design-pattern-in-javachain-of-responsibility-design-pattern-in-javaTue, 05 Jan 2016 00:00:00 GMTThis article explains Observer design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Observer Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. Being a behavioral design pattern, the Observer pattern deals with how objects of the designed system interact with each other. What is Observer Design Pattern: An Observer Design Pattern is used when there are multiple subscribers observing updates from a publisher. The publisher, known as Subject, publishes its change of state to its subscribers. Subscribers, known as Observers, receive these changes and ... Continue reading Observer Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/observer-design-pattern-in-javaobserver-design-pattern-in-javaSat, 02 Jan 2016 00:00:00 GMTException in thread "main" java.lang.Error: Unresolved compilation problems: The target type of this expression must be a functional interface Then this implies that you are trying to assign a Lambda Expression to a ... Continue reading Java 8 Error-The target type of this expression must be a functional interface. →]]>https://www.javabrahman.com/java-8/the-target-type-of-this-expression-must-be-a-functional-interfacethe-target-type-of-this-expression-must-be-a-functional-interfaceWed, 30 Dec 2015 00:00:00 GMTThis article explains Builder design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Builder Design Pattern is a creational design pattern among the Gang Of Four(GOF) Design Patterns.Being a creational design pattern, the Builder pattern deals with the design of how the object creation is managed. What is Builder Design Pattern: In a Builder Design Pattern implementation the construction of a complex object is separated from its representation. This enables us to create multiple representations using the same construction process. In Builder Pattern the class which invokes ... Continue reading Builder Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/builder-design-pattern-in-javabuilder-design-pattern-in-javaSun, 27 Dec 2015 00:00:00 GMTIntroduction:This article explains what are Java 8 Repeating Annotations, how to define repeating annotations using the @Repeatable annotation and how these are handled internally. Lastly, it also takes a look at how Class.java has been changed in Java 8 to handle Repeating Annotations. What is the Repeating Annotations feature: As the name suggests, Repeating Annotations imply that a particular annotation is applied multiple times to a declaration. For example: Lets say there is an annotation @Color ... Continue reading Java 8 Repeating Annotations Tutorial using @Repeatable with examples →]]>https://www.javabrahman.com/java-8/java-8-repeating-annotations-tutorialjava-8-repeating-annotations-tutorialFri, 25 Dec 2015 00:00:00 GMTThis article analyses Strategy Design Pattern versus State Design Patterns w.r.t to their similarities and differences. Similarities between State Pattern and Strategy Pattern:

1. Class Diagrams of the Patterns: One of the biggest similarities between state pattern and strategy pattern is their class diagrams ... Continue reading Strategy Design Pattern versus State Design Pattern - An Analysis → ]]>https://www.javabrahman.com/design-patterns/strategy-design-pattern-versus-state-design-pattern-analysisstrategy-design-pattern-versus-state-design-pattern-analysisWed, 23 Dec 2015 00:00:00 GMTThis article explains Prototype design pattern in Java with the help of its UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction: Prototype Design Pattern is a creational design pattern among the Gang Of Four(GOF) Design Patterns. Being a creational design pattern, the Prototype pattern deals with the design of how the object creation is managed. What is Prototype Design Pattern: In a Prototype Design Pattern implementation the type of object to be created is specified using a prototypical instance. New objects are created by copying(or cloning) this prototype. In simpler terms ... Continue reading Prototype Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/prototype-design-pattern-in-javaprototype-design-pattern-in-javaTue, 22 Dec 2015 00:00:00 GMTThis article explains Single Responsibility Principle with Example in Java. What is Single Responsibility Principle: Single Responsibility Principle is one of the five principles of SOLID Design Principles. Specifically, the S in SOLID stands for Single Responsibility Principle. Single Responsibility Principle was defined by Robert C. Martin as -   →A class should have only one reason to change. Wikipedia and many write-ups on Single Responsibility Principle describe it as -   → A class should have only one responsibility. Both of these definitions actually mean the same. For this we have to understand what is meant by Responsibility in the context of ... Continue reading Single Responsibility Principle with Example in Java →]]>https://www.javabrahman.com/programming-principles/single-responsibility-principle-with-example-in-javasingle-responsibility-principle-with-example-in-javaMon, 21 Dec 2015 00:00:00 GMTIntroduction:This tutorial explains the concept of mapping with streams using the map & flatMap methods with examples to show their usage. What is mapping with Streams: Mapping in the context of Java 8 Streams refers to converting or transforming a Stream carrying one type of data to another type. Lets take an example. Say we have a stream containing elements of type ... Continue reading Java 8 Mapping with Streams | map and flatMap methods tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-mapping-with-streams-map-flatmap-methods-tutorial-with-examplesjava-8-mapping-with-streams-map-flatmap-methods-tutorial-with-examplesSun, 20 Dec 2015 00:00:00 GMTIntroduction: Tutorial explains the in-built functional interface Supplier<T> introduced in Java 8. It explains with the help of examples how the Supplier interface is to be used via its get() method. What is java.util.function.Supplier: Supplier<T> is an in-built functional interface introduced in Java 8 in the java.util.function package. Supplier can be used in all contexts where there is no input but an output is expected. Since Supplier is a functional interface, hence it can be used as the assignment target for ... Continue reading Java 8 java.util.function.Supplier Tutorial →]]>https://www.javabrahman.com/java-8/java-8-java-util-function-supplier-tutorial-with-examplesjava-8-java-util-function-supplier-tutorial-with-examplesWed, 16 Dec 2015 00:00:00 GMTThis article explains State design pattern in java with UML class diagram. It then takes an example scenario in java and explains it with class diagram and code. Introduction - State Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. Being a behavioral design pattern, the State pattern deals with how the objects communicate and share responsibilities among each other. What is State Design Pattern: State Design Pattern allows the behavior of an object to vary based on its state. I.e. whenever the object's state changes, its behavior changes as per its new state. To the observer it appears as if ... Continue reading State Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/state-design-pattern-in-javastate-design-pattern-in-javaTue, 15 Dec 2015 00:00:00 GMTWhat is java.util.function.Function: Function<T, R> is an in-built functional interface introduced in Java 8 in the java.util.function package. The primary purpose for which Function<T, R> has been created is for mapping scenarios i.e when ... Continue reading Java 8 java.util.function.Function Tutorial with Examples →]]>https://www.javabrahman.com/java-8/java-8-java-util-function-function-tutorial-with-examplesjava-8-java-util-function-function-tutorial-with-examplesFri, 11 Dec 2015 00:00:00 GMTIntroduction: Memento Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. Being a behavioral design pattern, the memento pattern basically deals with how the objects communicate and share responsibilities among each other. What is Memento Design Pattern: Memento design pattern provides ability to capture(save) an object's state and then restore back this captured state when required by the system. Memento design pattern can be chosen to capture state of a system when ... Continue reading Memento Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/memento-design-pattern-in-javamemento-design-pattern-in-javaThu, 10 Dec 2015 00:00:00 GMTIntroduction: This tutorial explains how to do filtering and slicing in Java 8 Streams using the filter, distinct, limit and skip methods. Streams Filtering & Slicing Basics: Java 8 Streams support declarative filtering out of elements along with the ability to slice-off portions of a list. Streams support four operations to achieve this - filter, distinct, limit(n) and skip(n). Lets quickly look at what these methods do followed by a java example ... Continue reading Java 8 Filtering and Slicing with Streams Tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-filtering-and-slicing-streams-tutorial-with-examplesjava-8-filtering-and-slicing-streams-tutorial-with-examplesMon, 07 Dec 2015 00:00:00 GMTWhat is java.util.function.Consumer: Consumer<T> is an in-built functional interface introduced in Java 8 in the java.util.function package. Consumer can be used in all contexts where an object needs to be consumed,i.e. taken as input, and some operation is to be performed on the object without returning any result. Common example of such an operation ... Continue reading Java 8 java.util.function.Consumer Tutorial with Examples →]]>https://www.javabrahman.com/java-8/java-8-java-util-function-consumer-tutorial-with-examplesjava-8-java-util-function-consumer-tutorial-with-examplesSun, 06 Dec 2015 00:00:00 GMTContinue reading Java - How to Resolve "Error: not a statement" →]]>https://www.javabrahman.com/error-handling/error-not-a-statementerror-not-a-statementSat, 28 Nov 2015 00:00:00 GMTThis article explains Visitor design pattern in java with class diagrams and example code. Introduction - Visitor Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. What is Visitor Design Pattern: Visitor pattern defines operations in a way that they can be performed on the objects arranged in a structure independently of the object structure itself. Independently here implies that ... Continue reading Visitor Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/visitor-design-pattern-in-javavisitor-design-pattern-in-javaFri, 27 Nov 2015 00:00:00 GMTIntroduction - Factory Method Design Pattern is a creational design pattern among the Gang Of Four(GOF) Design Patterns. Being a creational design pattern, the factory method design pattern deals with the creation of a family of objects. What is Factory Method Design Pattern: Factory method design pattern creates objects in such a way that it lets the sub-classes decide how to implement the object creation logic ... Continue reading Factory Method Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/factory-method-design-pattern-in-javafactory-method-design-pattern-in-javaTue, 17 Nov 2015 00:00:00 GMTIntroduction - Proxy Design Pattern is a structural design pattern among the Gang Of Four(GOF) Design Patterns. What is Proxy Design Pattern: Proxy pattern specifies a design where substitute or placeholder object is put in-place of the actual target object to control access to it. Client accesses the proxy object to ... Continue reading Proxy Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/proxy-design-pattern-in-javaproxy-design-pattern-in-javaThu, 12 Nov 2015 00:00:00 GMTWhat is default method resolution conflict: What-if the multiple default interfaces implemented have default methods with the same signatures ... Continue reading Java 8 Multiple Inheritance Conflict Resolution Rules and Diamond Problem →]]>https://www.javabrahman.com/java-8/java-8-multiple-inheritance-conflict-resolution-rules-and-diamond-problemjava-8-multiple-inheritance-conflict-resolution-rules-and-diamond-problemSun, 08 Nov 2015 00:00:00 GMTMultiple Inheritance of Behavior with Default Methods: Until Java 7 multiple interface inheritance was possible but interfaces were not allowed to have concrete methods. Thus, behavior inheritance was not possible. With Java 8, where interfaces can now have default methods implemented in them, it is now possible to have a derived class inherit methods from multiple parent interfaces. So, multiple inheritance of behavior is now possible. Lets see an example ... Continue reading Java 8 Multiple Inheritance of Behavior from Interfaces using Default Methods →]]>https://www.javabrahman.com/java-8/java-8-multiple-inheritance-of-behavior-from-interfaces-using-default-methodsjava-8-multiple-inheritance-of-behavior-from-interfaces-using-default-methodsSat, 07 Nov 2015 00:00:00 GMTShort Circuit Evaluations - In boolean logic whenever we have multiple conditions in sequence i.e. conditions getting checked are ANDed or ORed one after the other, then short circuit evaluation ignores checking the remaining conditions ... Continue reading Short-Circuiting Or Short-Circuits in Boolean Evaluations in Programming and Java →]]>https://www.javabrahman.com/programming-principles/short-circuiting-or-short-circuits-in-boolean-evaluations-in-programming-and-javashort-circuiting-or-short-circuits-in-boolean-evaluations-in-programming-and-javaWed, 04 Nov 2015 00:00:00 GMTnot an either/or options. Its not like you have to choose one of them to implement. On the contrary, static and default methods work together to deliver the full functionality of an interface. Quick introductions to Static & Default Methods Static Methods: These are methods written in Interfaces which are static... Continue reading Java 8 Static Methods vs Default Methods in Interfaces →]]>https://www.javabrahman.com/java-8/java-8-static-methods-vs-default-methods-in-interfacesjava-8-static-methods-vs-default-methods-in-interfacesTue, 03 Nov 2015 00:00:00 GMTIntroduction - Facade Design Pattern is a structural design pattern among theGang Of Four(GOF) Design Patterns. Being a structural design pattern, the facade pattern basically deals with how the classes are composed together to get the desired outcome from a system. What is Facade Design Pattern: The basic design problem which the facade pattern solves is to simplify access to a set of interfaces in a subsystem. Facade solves this problem by providing a higher-level interface one level above all the sub-level interfaces ... Continue reading Facade Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/facade-design-pattern-in-javafacade-design-pattern-in-javaMon, 02 Nov 2015 00:00:00 GMTThis tutorial explains what are default methods in Java 8 with examples, why they are useful and how they can be used to enhance the design of your code. What are Default Methods: Default methods are methods implemented in an interface, are non-abstract, and marked by the modifier default. These methods are available to all classes which implement this interface. Format of default methods: ... Continue reading Default methods in Java 8 with Examples →]]>https://www.javabrahman.com/java-8/default-methods-in-java-8-with-examplesdefault-methods-in-java-8-with-examplesSun, 01 Nov 2015 00:00:00 GMTCharacter. What are wrapper classes: Java Wrapper Classes are used to hold primitive data type as Objects. In java primitive data types are not objects. Wrapper classes are wrappers which take a primitive data value ... Continue reading Java Wrapper Classes Tutorial with Examples →]]>https://www.javabrahman.com/corejava/java-wrapper-classes-tutorial-with-examplesjava-wrapper-classes-tutorial-with-examplesFri, 30 Oct 2015 00:00:00 GMTThis article explains adapter design pattern in java with class diagrams and example code. Introduction: Adapter class makes classes with incompatible interfaces work together. Adapter Design Pattern is a structuraldesign pattern among the Gang Of Four(GOF) Design Patterns. I.e. the adapter pattern deals with how the classes are composed to form larger structures. What is Adapter Design Pattern ... Continue reading Adapter Design Pattern in Java →]]>https://www.javabrahman.com/design-patterns/adapter-design-pattern-in-javaadapter-design-pattern-in-javaWed, 28 Oct 2015 00:00:00 GMTThis article explains strategy design pattern in Java with class diagrams and example code. Introduction - Strategy Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. What is Strategy Design Pattern: ... Continue reading Strategy Pattern in Java → ]]>https://www.javabrahman.com/design-patterns/strategy-design-pattern-in-javastrategy-design-pattern-in-javaSun, 25 Oct 2015 00:00:00 GMTThis article explains Template Method Design Pattern in Java with class diagrams and example code. Introduction - Template Method Design Pattern is a behavioral design pattern among the Gang Of Four(GOF) Design Patterns. What is Template Method Design Pattern: ... Continue reading Template Design Pattern in Java → ]]>https://www.javabrahman.com/design-patterns/template-method-design-pattern-in-javatemplate-method-design-pattern-in-javaSat, 24 Oct 2015 00:00:00 GMTThis tutorial explains the functional interface Predicate which has been newly introduced in the java.util.function package. It describes Predicate's usage with the help of multiple examples. What is java.util.function.Predicate - Predicate is a new functional interface defined in java.util.function package which can be used in all the contexts where an object needs to be evaluated for a given test condition and a boolean value needs to be returned based on ... Continue reading Java 8 java.util.function.Predicate tutorial with examples →]]>https://www.javabrahman.com/java-8/java-8-java-util-function-predicate-tutorial-with-examplesjava-8-java-util-function-predicate-tutorial-with-examplesFri, 23 Oct 2015 00:00:00 GMTIntroduction: This tutorial explains the newly introduced package in Java 8 java.util.function. It first explains the purpose of this package, followed by the contexts in which the functional interfaces defined in this package can be used and finally gives an overview of the most important functional interfaces that this package contains. Purpose of java.util.function package: For common use cases where a lambda expression or a method reference is needed, these are generally assigned ... Continue reading Java 8 java.util.function package tutorial →]]>https://www.javabrahman.com/java-8/java-8-java-util-function-package-tutorialjava-8-java-util-function-package-tutorialFri, 23 Oct 2015 00:00:00 GMThttps://www.javabrahman.com/java-8/java-8-internal-iterators-vs-external-iteratorsjava-8-internal-iterators-vs-external-iteratorsWed, 21 Oct 2015 00:00:00 GMTThis article explains the open closed principle with examples in Java. Open/Closed Principle was originally defined by Bertrand Meyer in his book Object Oriented Software Construction. Bertrand Meyer's Definition was divided into three statements.The first two statements defined the notions of Open & Closed modules(or classes) - As per Meyer a module is Open when - A module will be said to be open if it is still available for extension. For example, it should be possible to add fields to the data structures it contains, or new elements to the set of functions it performs. What it means - If attributes or ... Continue reading Open Closed Principle with examples in Java →]]>https://www.javabrahman.com/programming-principles/open-closed-principle-with-examples-in-javaopen-closed-principle-with-examples-in-javaMon, 19 Oct 2015 00:00:00 GMTIntroduction:This article describes pipelines in computing and software engineering - starting from the fundamentals of pipelines concept in computing, moving to basic instructions pipeline, to pipelines in Unix and Streams API in Java 8. Definition of Pipelining in Computing: Pipelining is a segmentation of a computational process into several sub-processes which are executed by dedicated autonomous units. In other words, pipelining can be defined as the technique of decomposing a repeated sequential process into sub-processes, each of which can be executed efficiently on a special dedicated autonomous module that operates concurrently with the others. What it means: ... Continue reading Pipelines in Computing and Software Engineering - Conceptual Article →]]>https://www.javabrahman.com/programming-principles/pipelines-in-computing-and-software-engineeringpipelines-in-computing-and-software-engineeringWed, 14 Oct 2015 00:00:00 GMTWhat are Static Imports - Static Imports allow accessing the static attributes (variables & methods) of a class without using the <ClassName<. In other words, static imports allow unqualified access to static members of a class. Unqualified here refers to the dropping of classname prefix. Examples of using Static Imports ... Continue reading Understanding Static Imports in Java with Examples →]]>https://www.javabrahman.com/corejava/understanding-static-imports-in-java-with-examplesunderstanding-static-imports-in-java-with-examplesMon, 12 Oct 2015 00:00:00 GMTDefinition of Streams- A stream is a sequence of elements supporting parallel and aggregate operations. This sequence of elements are obtained from a source .Further the stream supports processing of these elements through operations defined in a declarative way. These operations are linked-up according to the principle of pipelines and they access the elements via Internal Iterations. Lets now understand the conceptual terms making up the definition ... Continue reading Java 8 Streams API Tutorial with Examples →]]>https://www.javabrahman.com/java-8/java-8-streams-api-tutorial-with-examplesjava-8-streams-api-tutorial-with-examplesFri, 09 Oct 2015 00:00:00 GMTThis is article explains the concept of Method References introduced in Java 8. Definition: A method reference is a simplified form (or short-hand) of a lambda expression. It specifies the class name or the instance name followed by the method name. Instead of writing the lambda expression with all the details such as parameter and return type, a method reference lets you create a lambda expression from an existing method implementation. Method Reference Syntax: ... Continue reading Java 8 Method References Tutorial with Examples →]]>https://www.javabrahman.com/java-8/java-8-method-references-tutorial-examplesjava-8-method-references-tutorial-examplesTue, 22 Sep 2015 00:00:00 GMTDefinition: Constructor References are method references which refer to the constructors of a class. Constructor References can be created using the Class Name and the keyword new with the following syntax- Syntax of Constructor References: ... Continue reading Constructor References Java 8 Simplified Tutorial →]]>https://www.javabrahman.com/java-8/constructor-references-java-8-simplified-tutorialconstructor-references-java-8-simplified-tutorialTue, 22 Sep 2015 00:00:00 GMTSyntax error, insert "Dimensions" to complete ReferenceType Cause of this error - You are trying to pass a primitive object into a generic type declaration whereas generic types always expect a ... Continue reading How to Resolve - Syntax error, insert "Dimensions" to complete ReferenceType →]]>https://www.javabrahman.com/corejava/how-to-resolve-syntax-error-insert-dimensions-to-complete-referencetypehow-to-resolve-syntax-error-insert-dimensions-to-complete-referencetypeMon, 21 Sep 2015 00:00:00 GMTDefinition - In Java 8 a Function Descriptor is a term used to describe the signature of the abstract method of a Functional Interface. The signature of the abstract method of a Functional Interface is syntactically the same as the signature of the Lambda Expression. Hence, a Function Descriptor also describes the signature of a lambda. To illustrate ... Continue reading Java 8 Function Descriptors Explained →]]>https://www.javabrahman.com/java-8/function-descriptors-java-8-explainedfunction-descriptors-java-8-explainedTue, 15 Sep 2015 00:00:00 GMTDefinition - A Lambda Expression ( or just lambda for brevity) is a representation of an anonymous function which can be passed around as a parameter thus achieving Behavior Parameterization. A lambda consists of a list of parameters, a body, a return type and a list of exceptions which can be thrown. I.e. it is very much a function, just anonymous. An instance of a lambda can be assigned to any ... Continue reading Java 8 Lambda Expressions Tutorial with Examples →]]>https://www.javabrahman.com/java-8/lambda-expressions-java-8-explained-exampleslambda-expressions-java-8-explained-examplesMon, 14 Sep 2015 00:00:00 GMTany interface which has only a single abstract method, then that will effectively be a functional interface. This interface can then be used anywhere where a functional interface is eligible to be used. Lets see some examples of functional interfaces ... Continue reading Functional Interfaces in Java 8 Explained →]]>https://www.javabrahman.com/java-8/functional-interfaces-java-8functional-interfaces-java-8Sat, 12 Sep 2015 00:00:00 GMTThe Basics Abstraction refers to the concept of hiding the complexities of a system from the users of that system. Lets see an example of abstraction: Lets say we have a ... Continue reading Abstraction vs Encapsulation in OOPS with Examples →]]>https://www.javabrahman.com/programming-principles/abstraction-vs-encapsulation-in-oops-with-examplesabstraction-vs-encapsulation-in-oops-with-examplesSat, 22 Aug 2015 00:00:00 GMThttps://www.javabrahman.com/error-handling/error-_grailsclasspath_groovy_run_closure1error-_grailsclasspath_groovy_run_closure1Tue, 26 May 2015 00:00:00 GMTIntroduction:This article first explains how to implement recursive fibonacci algorithm in java, and follows it up with an enhanced algorithm implementation of recursive fibonacci in java with memoization. What is Fibonacci Sequence: Fibonacci is the sequence of numbers which are governed by the recurrence relation - "F(n)=F(n-1)+F(n-2)". The first 2 numbers numbers in the sequence are  0,1 . The Fibonacci sequence, based on the recurrence relation given above, goes like this - 0,1,1,2,3,5,8,13,21 and so on... Recursive Fibonacci Implementation: Given below is a recursive java program which generates numbers in the Fibonacci sequence ... Continue reading Recursive Fibonacci in Java with Memoization →]]>https://www.javabrahman.com/gen-java-programs/recursive-fibonacci-in-java-with-memoizationrecursive-fibonacci-in-java-with-memoizationSat, 18 Apr 2015 00:00:00 GMTThis article is an overview of GOF/Gang of Four Design Patterns. It defined and explains the three categories of GOF Design Patterns along with listing out all the patterns in the category with a brief definition of each. What is a design pattern: A design pattern is a general reusable solution to a commonly occurring problem in software design. It is a template for how to solve a problem that can be used in many different situations. Patterns are formalized best practices that the programmer can use to solve common problems when designing an application or system. Gang of Four Design Patterns: These are design patterns which were defined by... Continue reading Gang Of Four(GOF) Design Patterns →]]>https://www.javabrahman.com/design-patterns/gof-gang-four-design-patternsgof-gang-four-design-patternsWed, 24 Sep 2014 00:00:00 GMTTutorial describes One to One Mappings in JPA with examples. What are One to One Mappings: One to One mappings between entities refers to those relationships where one record of an entity(say entity-1) is mapped exactly to one record of another entity(say entity-2). Then entity-1 and entity-2 are said to be in a One to One relationship with each other. Or, it can be said that a One to One mapping exists between the two entities. Example Database Table Structure with a One to One Mapping: ... Continue reading One To One Mapping in JPA with Examples →]]>https://www.javabrahman.com/jpa/one-to-one-mapping-in-jpaone-to-one-mapping-in-jpaWed, 17 Sep 2014 00:00:00 GMTNull constraints in JPA reflect the nullability of a column as defined in the database schema. As such in all database definitions a column is nullable by default. I.e. if a column is not defined as primary key or unique then it is by default nullable. It is to make a column mandatory, i.e. to stop it from accepting null values, that we make it non-nullable. The same logic is reflected in JPA as well. Null constraint can be defined on either an @Column or an @JoinColumn. Lets say we have an Employee table ... Continue reading JPA Not Null Constraint/ Not Nullable column →]]>https://www.javabrahman.com/jpa/jpa-not-null-constraintjpa-not-null-constraintWed, 17 Sep 2014 00:00:00 GMTContinue reading Catching Multiple Exception Types in a single catch block in Java 7 →]]>https://www.javabrahman.com/newfeaturesjava7/catching-multiple-exception-types-in-single-catch-block-in-java-7catching-multiple-exception-types-in-single-catch-block-in-java-7Thu, 28 Aug 2014 00:00:00 GMT(Note - Every feature/concept has a link to a detailed article explaining it.) ... Continue reading Java 8 - New Features →]]>https://www.javabrahman.com/java-8/new-features-in-java-8new-features-in-java-8Wed, 27 Aug 2014 00:00:00 GMTjavax.persistence.NoResultException: No entity found for query OR javax.persistence.NonUniqueResultException: result returns more than one elements Then it is most likely that your database does not have even a single record matching your query OR you have too many results being returned. Normally this happens when the method ... Continue reading How to resolve javax.persistence.NoResultException OR javax.persistence.NonUniqueResultException in JPA →]]>https://www.javabrahman.com/jpa/no-result-exceptionno-result-exceptionFri, 20 Jun 2014 00:00:00 GMTContinue reading Diamond Operator in JDK 7 or Java 7 explained with example →]]>https://www.javabrahman.com/newfeaturesjava7/diamond-operator-jdk-7diamond-operator-jdk-7Wed, 19 Feb 2014 00:00:00 GMTPre-requisite for this tutorial - The Eclipse plugin "Maven Integration for Eclipse (Juno and newer)" should be installed in your copy of Eclipse IDE. Lets start off the with the tutorial then ... Continue reading How to Create JAR File with Maven in Eclipse →]]>https://www.javabrahman.com/maven/how-to-build-jar-using-maven-project-eclipsehow-to-build-jar-using-maven-project-eclipseFri, 14 Feb 2014 00:00:00 GMTMerge Sort is a divide-and-conquer algorithm. Divide-and-conquer algorithms work on the principle of dividing the problem into smaller, more manageable, sub-problems recursively until these sub-problems become simple enough to be solved directly. The solutions to these sub-problems are then merged in the reverse order in the recursive chain to obtain the final desired result. Lets now see how divide-and-conquer is applied in Merge Sort. We will take up merge sort solution in ... Continue reading Merge Sort in Java →]]>https://www.javabrahman.com/algorithms-in-java/merge-sort-in-javamerge-sort-in-javaWed, 05 Feb 2014 00:00:00 GMTWhat is Selection Sort: Tutorial explains the Selection Sort Algorithm with an example list.It then provides the Java implementation of Selection Sort Algorithm and its Big Oh complexity. Contains video explanation of the algorithm and Java code as well. ... Continue reading Selection Sort in Java →]]>https://www.javabrahman.com/algorithms-in-java/selection-sort-in-javaselection-sort-in-javaSat, 01 Feb 2014 00:00:00 GMTIntroduction - This tutorial starts with explaining the basic factorial calculation formula. It then shows how the factorial formula is recursive in nature. Next we will look at how to implement factorial formula in Java in a recursive manner and then explains the code in detail ... Continue reading How to compute Factorial using a recursive algorithm in Java →]]>https://www.javabrahman.com/gen-java-programs/factorial-using-recursion-in-javafactorial-using-recursion-in-javaWed, 29 Jan 2014 00:00:00 GMTWhat is Insertion Sort: Insertion sort works by progressively sorting a sub-list of the given list of items. With every iteration\pass the insertion sort algorithm keeps "inserting" the next item in the list in the correct position in this sorted sub-list.I.e. with every pass one item more is picked from the unsorted portion and is inserted in to the correct place in the sorted portion. Insertion Sort's working in detail: Lets say the list which is to be sorted is ... Continue reading Insertion Sort in Java →]]>https://www.javabrahman.com/algorithms-in-java/insertion-sort-in-javainsertion-sort-in-javaTue, 28 Jan 2014 00:00:00 GMTContinue reading Java Parameter Passing is 'Pass By Value' Or 'Pass By Reference' →]]>https://www.javabrahman.com/corejava/java-parameter-passing-by-value-or-referencejava-parameter-passing-by-value-or-referenceSun, 26 Jan 2014 00:00:00 GMTWhat is Bubble Sort: Bubble Sort, considered by many to be the simplest of sorts, works by progressively in-place sorting(ie. not using up extra space while sorting) a list of items by moving the lowest valued item to the to the top or largest valued item to the bottom(for an ascending sort). It keeps lining bigger and bigger elements below the earlier smaller ones. In this way the whole array gets sorted. Bubble Sort's working in detail ... Continue reading Bubble Sort in Java →]]>https://www.javabrahman.com/algorithms-in-java/bubble-sort-in-javabubble-sort-in-javaMon, 20 Jan 2014 00:00:00 GMTThe tutorial below details how to do reverse engineering of Hibernate/JPA POJO entities from database tables. The database tables\entities which are used for this tutorial are Course, Department and Student. The way these 3 tables are related are Courses have a many-to-many relationship with Students and Students have a many-to-many relationship with Departments. This means ... Continue reading Reverse Engineering of JPA Entities with JBoss Tools Eclipse Plugin. →]]>https://www.javabrahman.com/eclipse-plugins/how-to-do-reverse-code-generation-of-hibernatejpa-pojo-entities-using-jboss-tools-eclipse-pluginhow-to-do-reverse-code-generation-of-hibernatejpa-pojo-entities-using-jboss-tools-eclipse-pluginFri, 17 Jan 2014 00:00:00 GMTThe tutorial below details how to setup a JPA Project in Eclipse. As part of the JPA Project creation a Data Connection to a local MySQL database instance will also be configured. Note - This tutorial has been created using Eclipse Juno. Step 1: Click in ... Continue reading How to setup a JPA Project with a Data Connection for MySQL in Eclipse. →]]>https://www.javabrahman.com/eclipse-plugins/how-to-setup-a-jpa-project-with-a-data-connection-for-mysql-in-eclipsehow-to-setup-a-jpa-project-with-a-data-connection-for-mysql-in-eclipseSun, 12 Jan 2014 00:00:00 GMTThe tutorial below details the steps to install JBoss Tools Eclipse Plugin. Note-Hibernate Tools Plugin, which is now a part of JBoss Tools, gets installed along with JBoss Tools with no extra setup required. Note 2- This tutorial is created using Eclipse Juno. Step 1 - Click on ... Continue reading How to Install JBoss Tools Eclipse Plugin →]]>https://www.javabrahman.com/eclipse-plugins/how-to-install-jboss-tools-eclipse-pluginhow-to-install-jboss-tools-eclipse-pluginSun, 12 Jan 2014 00:00:00 GMThttps://www.javabrahman.com/javascripthtml/fix-for-dynamic-html-form-using-javascript-not-working-in-ie-and-mozillafix-for-dynamic-html-form-using-javascript-not-working-in-ie-and-mozillaThu, 09 Jan 2014 00:00:00 GMTContinue reading Check Uncheck All Checkboxes in Html Using JavaScript →]]>https://www.javabrahman.com/javascripthtml/check-uncheck-all-checkboxes-in-html-using-javascriptcheck-uncheck-all-checkboxes-in-html-using-javascriptFri, 03 Jan 2014 00:00:00 GMThttps://www.javabrahman.com/undefined/regular-expression-for-email-addressregular-expression-for-email-addressSun, 29 Dec 2013 00:00:00 GMThttps://www.javabrahman.com/corejava/string-in-switch-case-in-java-7string-in-switch-case-in-java-7Tue, 24 Dec 2013 00:00:00 GMT