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This is a detailed description about how to use HashMap in Java. Lot of code examples makes it easy to understand it's behaviour.

This article demonstrates how to generate random numbers in Java. The code examples helps you to understand the details.

This article demonstartes how to compare objects in Java using the equals() method.

This article teaches you how to use an enum in Java. Code examples help you to understand the enumeration syntax.

This tutorial demonstrates how to use the instanceof keyword in Java to test the object type.

This article demonstrates how to convert a string that contains a number value to an integer in Java.

ZIPCodeWorld.com provides this function to calculate the latitude and longitude coordinates from Vertical and Horizontal (V&H) coordinates in Java. V&H's are used to identify locations and hence relative distances between network elements and between rate centers listed in AreaCodeWorld(TM) North American Area Code Database Subscription which includes NPA (area code), NXX (exchange), country, state, county, latitude, longitude, etc.

Learn to write Android applications. Learn the basics of working with resources, layouts, the AndroidManifest.xml file and building code. Topics covered include creating dialog boxes, playing sounds, creating views and layouts with LinearLayout and RelativeLayout, and launching new views.

This tutorial covers building basic XML structures in Java. Learn basic XML structure, and how to build XML in Java with DOM. Also learn to use the TransformerFactory to convert the DOM to strings.

Learn to create Java servlets in the NetBeans IDE. The tutorial creates a basic mailing list and explores file access along with some DOM XML. Also covered is deploying the servlets with Glassfish.

This guides shows how to read text and binary files in Java into String / byte array.

This guide shows how to make a java class Cloneable and how to clone an object.

This Tutorial provides tutorial notes on MySQL JDBC driver. Topics include installing MySQL JDBC driver; connection URL and DriverManager class; DataSource and Connection objects; server and driver information; creating tables with auto-increment columns.

Accessing files with Java is easy. With this easy to follow tutorial you will learn how to perform basic file operations in Java. Reading, writing, appending, and random file access are covered. Along with an introduction to file locking.

This tutorial shows how to parse an XML file to a DOM document

JUnit is a popular testing framework. This simple tutorial shows how to write a JUnit testcase.

This tutorial shows how to make an object serializer tool that saves Java objects to the file system.

A proxy in Java can wrap an object and expose the same interface. This proxy can be used the same way as the original object, but can contain extra functionality. This site shows an example how to make a proxy that logs all method calls of an object.

This Tutorial provides tutorial notes and example codes on JFrame class. Topics include creating frames with sizes and locations; terminating program with its frame is closed; Listing AWT threads; displaying Chinese character on frames; drawing graphics on frames.

jar.fyicenter.com provides you detailed information on many commonly used 3rd party JAR files. You can use the search function to find the right JAR file name by entering the missing class name. jar.fyicenter.com also provides you information on how to download JAR files.