Java - Generics

It would be nice if we could write a single sort method that could sort the elements in an Integer array, a String array, or an array of any type that supports ordering. Java Generic methods and generic classes enable programmers to specify, with a single method declaration,...

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Java - Data Structures

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The data structures provided by the Java utility package are very powerful and perform a wide range of functions. These data structures consist of the following interface and classes − ◉ Enumeration ◉ BitSet ◉ Vector ◉ Stack ◉ Dictionary ◉ Hashtable ◉ Properties All these classes are...

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JFileChooser Example - Show Open Save File Dialog in Java Swing Application

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Hello guys, if you worked in Java GUI based application then you may know that Swing provides class javax.swing.JFileChooser that can be used to present a dialog for the user to choose a location and type a file name to be saved, using the showSaveDialog() method. Syntax of...

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Java 8 Lambda Expressions with examples and Rules

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Java 8 is first released in 2014 and introduced lot of new features. Lambda expressions are the most significant change in java 8 version. As of java 7, Oracle/Sun people have given impartance to the object oriented programming languages but in java 8, they have introduced functional programming...

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Why use Cloud Computing? Advantages and Disadvantages

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Cloud Computing has been a buzz word in the IT world from the last few years. When it first appeared, like many things, a lot of people has dismissed it as being next big thing, but cloud computing has certainly lived up to expectation and truly shift how...

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5 Ways to implement Singleton Design Pattern in Java

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This article introduces the singleton design pattern and its 5 implementation variations in Java You will learn different ways to implement a singleton pattern and also understand the challenges with creating a singleton class like thread-safety issues and serialization issues. Problem At most one instance of a class...

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A Java XMPP Load Test Tool

In this article, we will develop an XMPP Load Test Tool written in Java. 1. Introduction The eXtensible Messaging and Presence Protocol (XMPP) is a communication protocol for message-oriented middleware based on XML (Extensible Markup Language). It is an open protocol standardized by the Internet Engineering Task Force...

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