Java Tutorials

Why do we need to put Tomcat behind an Apache server? Such a solution is widely used to improve the performance of high-load environments. Being a fast, secure and flexible HTTP server and having a variety of modules, Apache easily provides some additional functionality for various purposes.

What is immutable class and why the String class is made immutable in java?

To retrieve a record form DDLRecord in liferay 6.2 please follow the below given code. Here in below code I am retrieving records from DDLRecord according recordId. here recordId = 11207. For more visit the link mentioned.

Learn Access control in Java using access modifiers. Simple explanation in easy words with code example for better understanding.

Java provides multiple ways to compare two Dates in Java. here we will see 3 simple example to convert two dates in Java and find out whether one date is before, after or in between two dates.

In general operating system's environment variables are key value pairs accessible from all install software programs and can affect the excecution of processes and programs and in this tutorial we will see how to access and set the value of environment variables.

Learn how to run a few domain names on the Java application server GlassFish, which combines enterprise-class capabilities with open source cost efficiency. It’s an enterprise-ready application server with true interoperability and a wide range of features including superior documentation, administration, and configuration.

One of the new additions in Java 7 is a very useful mechanism for recursively traversing file trees and in this tutorial we will see how to walk through files and processing -pre and -post visiting events

This is our series of articles covering introductory-level Java and programming topics. Java Article 19: Intro to Java Collections - Arrays

Learn how to Speed up your slow running Eclipse IDE