Introduction to Java

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  • Java for loop

    Examples and details of Java for loop usage are covered in this article. You can learn every details about how to use for loops in Java.

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  • Java array tutorial

    This article explains how to use arrays in Java. With the included code examples it is easy to understand arrays behaviour.

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  • Java random number generation

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

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  • Java HashMap detailed tutorial

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

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  • Java equals usage

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

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  • Java instanceof operator details

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

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  • Java string to int conversion

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

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  • Java enum explained

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

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  • Java Tutorial for Beginners

    This tutorial starts with basics programming language constructs in Java and then moves on to discuss Object-oriented Programming concepts in Java. This tutorial is made from my University lectures.

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  • Static Keyword in Java

    While you are programming you would want to use some class members independently of any object of that class. Normally a class member is accessed with the help of the object of that class. However, it is possible to create class members that can be used... (show more)

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  • Java Methods Explanation

    A Java method is a collection of statements that are grouped together to perform an operation. When you call the System.out.println method, for example, the system actually executes several statements in order to display a message on the console. Now... (show more)

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  • Value objects

    Improve code quality using value objects. Examples of value objects are numbers, dates, string, email addresses, isbn numbers. Value objects are usually small and simple, their identity is based on their state, not on the object identity.

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  • How to read files in Java

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

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  • How to ZIP data in java

    This guide shows how to compress / decompress data using ZIP, and provides an example utility to perform this task.

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  • Basic File Manipulation With Java

    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.

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  • How to serialize / deserialize in Java

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

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  • Writing JUnit tests

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

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  • Writing proxy objects in Java

    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.

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  • Writing Form Data to Text Files

    This sample of JSP file, first handles all posted data from a web form and write to a text file. We have used Tomcat Server to run our sample code. You could easily edit the source code to use in your application.

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  • Console Based Java Calculator

    This is a small Console Based Java Calculator that can add, subtract , divide and multiply two numbers. Find the square root of a number, cube of a number, nth Power of a number. It is very for the begnners of Java....

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