Java & J2EE 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.

What is Java Synchronized Collections? Complete Tutorials using java.util.Collections

July 1st, 2018 by App Shah 2

Java Collection Framework is one of the most used section. There are more than 100 APIs are available for us to use at fingertips. synchronizedMap() returns a synchronized (thread-safe) ...
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Java: How to Copy Properties from One Bean to Another

September 2nd, 2018 by App Shah

Most Java developers are used to creating Java classes that conform to the JavaBeans naming patterns for property getters and setters. It is natural to then access these methods directly, ...
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Java Timer and TimerTask – Reminder Class Tutorials Example

September 2nd, 2018 by App Shah

java.util.Timer is a utility class that can be used to schedule a thread to be executed at certain time in future. Java Timer class can be used to schedule a task to be run one-time or to be ...
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In Java What is a Difference Between IdentityHashMap and HashMap + Performance Comparison

April 26th, 2018 by App Shah 2

Sometime back I have a special case in which I have to compare Map's Key based on equality operator (==). The equality operator (==) compares the references (addresses in memory) of the two ...
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In Java How to Get Random Element from ArrayList and ThreadLocalRandom Usage

April 23rd, 2018 by App Shah

Java is pretty amazing. Sometimes during mock testing you may need to generate Random number like Integer or Double or Long or String from ArrayList. In this tutorial we will create ...
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Java Method Overriding Examples and Concepts: Overriding Rules

September 2nd, 2018 by App Shah 18

Last week I wrote Java Method Hiding and Overriding: Override Static Method in Java here. But I realized, it's worth sharing some more information on Java Method Overriding. Rules for ...
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How to Fix Maven Artifacts Could not be Resolved Error? Exclude jms, jmxri & jmxtools JAR Dependencies

April 17th, 2018 by App Shah 2

I remember long time ago, I faced the same error and I tried fixing it by manually adding .jar files to my maven repository locally. I executed below command to install it in my localhost ...
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How to Read Complete File at a once in Java without using any Loop?

July 14th, 2018 by App Shah

Java is very flexible language in terms of functionalities and utilities available for use to use out of the box. There is no way you have create your own utility for operations. Just ...
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Java 10 Released with Parallel Full GC, Application Class-Data Sharing – Java SE 10 (JDK 10)