Java Programing laungage

Core Java Tutorial

Introduction of Core Java

How To Install JDk and Set of Path

Syntax of java Program

Difference between Java and C/C++

Advantage and Disadvantage of Java

What is Java

Why Java is not Pure Object Oriented Language

Java has Following Features/Characteristics

Limitation of Java Language and Java Internet

Common Misconception about Java

Simple Program of Java

Integrated Development Environment in java

Compile and Run Java Program

Applet and Comments in Java

Tokens in Java

Keywords in Java

Identifier and Variables in Java


Data Type in Java

Assignments and Initialization in Java

Operators in Java

Rule of Precedence in Java

Operator on Integer and Separators in Java Programming

Java Control Flow of Statements

If and If-else Selection Statement

Nested If-else and If-else-If Selection Statement

switch case and conditional operator Selection Statement

for and while Loop

do..while and for each Loop

break and labeled break statement

continue and labeled continue statement

return Statement and exit() Method

Escape Sequence for Special Characters and Unicode Code

Constants and Block or Scope

Statement in Java

Conversions between Numeric Types in Java

Import Statement in Java

User Input in Java using Scanner Class

User Input in Java using Console Class

Array in Java

One Dimensional Array

Two Dimensional Array

Two Dimensional Array Program

Command Line Argument in Java

String args Types in Java

Uneven/Jagged array in java

Math Class Function and Constant

Math Class all Function used in a program

Enumerated Types in Java

Object Oriented Programming v/s Procedural Programming

Object Oriented Programming Concepts in Java

Introduction to Class,Object and Method in Java

Class Declaration in Java

Class & Objects in java

Encapsulation in Java

Modifiers/Visibility for a Class or Interrface or member of a Class

Polymorphism in Java

Runtime polymorphism (dynamic binding or method overriding)

Downling and Installing jdk 1.5
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In this section we will learn from where we can download jdk 1.5 and how we can install it.

There are following link from where you can download and install jdk1.5 from following link .For download you just keep in mind only one think the version of your JDK should be 1.5 and OS version and its 64 byte or 32 .

You can download different updates available also. Only developers and Enterprise administrators should download these releases.

Downloading and installing JDK (or J2SE) 1.5.0
  1. Go to

  2. Click the "Download JDK" hyper link.
  3. Follow the instructions on the Web pages to download jdk-1_5_0-windows-i586.exe to a working directory on your hard disk. This file is about 45 MB.
  4. Double click on the file name: jdk-1_5_0-windows-i586.exe in the working directory in the File Explorer.
  5. Follow the instruction on the installation window to finish the installation. Remember to specify the target directory to be: \j2sdk1.5.0.
  6. Open a command window to try the java command. If you are getting the following output, your installation was ok: returns with message:
  7. \j2sdk1.5.0\bin\java -version

    java version "1.5.0"

    Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)

    Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)

    Once JDK is installed, you can try to use it to compile and execute a simple Java program:

Installing and Configuring 32,64-bit Sun JDK 5.0 on Microsoft Windows

Procedure Install Sun JDK on Microsoft Windows:

Download the Sun JDK 5.0 (Java 2 Development Kit) from Sun's website: Choose "JDK 5.0" for download and then select your Windows Platform to perform the installation.

Create an environment variable called JAVA_HOME that points to the JDK installation directory, for example: C:\Program Files\Java\jdk1.5.0_11\. To do this, open the Control Panel from the Start Menu, switch to Classic View if necessary, open the System Control Panel applet, select the Advanced Tab, and click on the Environment Variables button.

In order to run java from the command line add the jre\bin directory to your path, for example: C:\Program Files\Java\jdk1.5.0_11\jre\bin.

To install jdk is very easy .You just click next next it will automatically install for window .

For Linux is download and install required follow some simple steps:

Download, Move, Install and Verify the Installation

  1. Download the file jdk-1_5_0_22-linux-amd64-rpm.bin and move it to the server with an SSH tool.

  2. Do a copy command to move the bin file into /usr/java:sudo cp /home/rodrigo/jdk-1_5_0_22-linux-amd64-rpm.bin /usr/java/

  3. Change permissions to the file:sudo chmod a+x jdk-1_5_0_22-linux-amd64-rpm.bin

  4. Run the installation file by the following command:sudo ./jdk-1_5_0_22-linux-amd64-rpm.bin

  5. Verify youíre installation by typingjava -version,You should see something like:java version ď1.5.0_22?Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_22-b03)Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_22-b03, mixed mode)

  6. If you donít see this or you see previous installation of java, proceed to the next section.

Change Java Environment Variables

If you had a previous installation, you will have to change the environment variables.

  1. Open the profile file with your favorite editor. I used nano sudo nano /etc/profile

  2. In the /user/profile file, type the following lines. JAVA_HOME=/usr/java/jdk1.5.0_22; export JAVA_HOME PATH=$JAVA_HOME/bin:$PATH; export PATH*note: JAVA_HOME location might be different for you.

  3. Update the environment variables by typing source /etc/profile

  4. Verify youíre installation by typing java -version

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