Java and J2EE Tutorials Archives...

One of my favorite language Java is a programming language and computing platform developed by Sun which is acquired by Oracle now. J2EE is Java Enterprise Edition, which consists of core Java with a powerful set of libraries.

On Crunchify, we do have more than 400+ Java and J2EE tips with additional production ready utilities. Explore all tutorials below.

Simplest way to generate logs in Java using java.util.logging’s SimpleFormatter and XMLFormatter

May 26th, 2020 by App Shah

Java comes with lots of utilities. In this tutorial we will go over simplest way to generate log files using SimpleFormatter and XMLFormatter. On Crunchify, we have published few ...
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Java ConcurrentNavigableMap and ConcurrentSkipListMap Tutorial with all Details (java.util.concurrent.*)

May 6th, 2020 by App Shah

Sometime back I've written an article on difference between HashMap, ConcurentHashMap and SynchronizedMap. In this tutorial we will go over ConcurrentNavigableMap and ConcurrentSkipListMap ...
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How to use Spring Framework StopWatch() to Log ExecutionTime and ElapseTime of any Java Thread

April 19th, 2020 by App Shah 3

Spring Framework - StopWatch() is a very handy utility for any Java developer if you have small Java application or production ready application. Most of the Java applications involve Thread ...
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In Java How to Sort a Map on the Values? The Map Interface – Java Collections

April 11th, 2020 by App Shah

In Java How to sort a Map on Value? There are number of ways. Here we will follow below steps. [crayon-5ed2cf720a102786060576/] An object that maps keys to values. A map cannot contain ...
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How to add Resources Folder, Properties at Runtime into IntelliJ classpath? Adding Property files to Classpath

March 16th, 2020 by App Shah 6

Getting NullPointerException while reading Resource .properties file in Intellij IDE? Do you have an issue loading resources files into your Intellij IDE? Having below errors? Error: ...
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How to Remove Duplicate Elements from CSV or any other File in Java?

February 14th, 2020 by App Shah

Finding a duplicate lines from a file is not a hard problem. But sometime in an interview question, folks sometimes get very confused about the method they have to use. In this tutorial ...
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How to create executable .jar file using Linux commands and without Eclipse Shortcut?

January 28th, 2020 by App Shah

So far for me it it was so easy to right click in Eclipse IDE and create executable .jar file with few simple clicks. Last week I had to create executable .jar file manually on my Digital ...
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Have you noticed Race Condition in Java Multi-threading Concurrency Example? How to deal with it?

December 12th, 2019 by App Shah 4

Sometime back I've written an article on Producer Consumer Example and how to handle read/write operation better way in Java. On the similar note, in this tutorial we will discuss something ...
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In Java How to Perform File Search Operation using java.nio.file interface? Tutorial on File and Directory Operations

December 1st, 2019 by App Shah

Java 8 has so many new functionalities and collection of features which are hidden inside packages. In this tutorial we will go over java.nio.file.Path interface. Path is an object that ...
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