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.

In Java8 How to join List of Objects? Collectors.joining Concatenates the input Elements, separated by the Delimiter

November 5th, 2018 by App Shah

Collectors.joining() Concatenates the input Elements, separated by the Delimiter with provided Prefix and Suffix values. Yesterday I've published an article on StringJoiner(), ...
Read Article

Java: How to Get Random Key-Value Element From HashMap

October 25th, 2018 by App Shah

Is there a way to get the value of a HashMap randomly in Java? Of Course, below is a simple Java Code which represents the same. Also, at the end of program there is a bonus code to ...
Read Article

In Java best way to Convert File into a Bytes (Array of Bytes)

September 25th, 2018 by App Shah 3

Sometime back I've written some articles on convert Byte[] Array To String, Convert Char Array to String, convert String to Char Array, convert Arrays to Set, etc. In this tutorial we ...
Read Article

Have you noticed Race Condition in Java Multi-threading Concurrency Example? How to deal with it?

September 19th, 2018 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 ...
Read Article

What is Thread-Safe BlockingQueue in Java? When should you use it? Implementation Attached

September 3rd, 2018 by App Shah 2

So far I've written two articles on Producer Consumer concept on Crunchify. 1st one to explain Java Semaphore and Mutex and 2nd one to explain Concurrent Read/Write. In this Java Tutorial ...
Read Article

How to Read config.properties value using Spring MVC ‘singleton’ Scope in Java?

August 28th, 2018 by App Shah 6

Sometime back I have written a tutorial on how to read config file in tradition way. But what if you want to load it as a Spring MVC framework? It is most common that you may need to ...
Read Article

In Java How to Move all 0’s to end of Array Preserving Order of an Array? [2 ways]

August 28th, 2018 by App Shah

I've been playing with a problem of moving all 0's to end of Arrays in different interviews in various combinations. Sometimes I ask to move all 0 to front of array, sorting an array without ...
Read Article

Java 8 Stream API Operations and Lambda Expression Tutorial

August 26th, 2018 by App Shah

Java is a collection of APIs and with the introduction of Java 8, we do have more choice than before. java.util.stream API supports functional-style operations on streams of elements, ...
Read Article

How to Implement Simple Circular ArrayList in Java?

August 25th, 2018 by App Shah

In this tutorial we will go over details on how to implement Circular ArrayList. There are numerous examples we have on Crunchify about ArrayList and this one will be with Integer ...
Read Article