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.

In Java How to Sort a Map on the Values? The Map Interface – Java Collections

August 3rd, 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-5f300cfb3352a625238347/] An object that maps keys to values. A map cannot contain ...
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Java LocalDate(), LocalDateTime(), ZonedDateTime(), Calendar() and Date() Tutorial

July 18th, 2020 by App Shah

On Java, we have published How to Convert Current Time to Epoch Time and How to Calculate the Difference Between Two Java Date Instances tutorials sometime back. In this tutorial we will ...
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Java SSLSocket with TLS1.3 and TLS_AES_128_GCM_SHA256 Cipher Example

July 18th, 2020 by App Shah

How to send TLS1.3 HTTPs request to your domain and print response? SSLSocket class extends Sockets and provides secure socket using protocols such as the "Secure Sockets Layer" (SSL) or ...
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What is Lock(), UnLock(), ReentrantLock(), TryLock() and How it’s different from Synchronized Block in Java?

July 4th, 2020 by App Shah

In this tutorial we will go over Lock(), UnLock(), ReentrantLock(), TryLock() and how it's different from Synchronized Block in Java. If you have also below questions then you are at ...
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In Java How to Perform File Search Operation using java.nio.file interface? Tutorial on File and Directory Operations

June 27th, 2020 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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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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How to add Resources Folder, Properties at Runtime into IntelliJ classpath? Adding Property files to Classpath

March 16th, 2020 by App Shah 8

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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