Installing Java under Linux Envirinement

Steps involved in installing Java under Linux Environment.

Download Java installer for your System

Install Java on your computer

Set environment variables for classpath

Downloading and Installing Java in your computer .

For compiling and running a java program in your system you have to install java platform.Java Development Kit (JDK) is the basic set of tools required to compile and run java programs. Download the latest version from Download Site.

Click on Download button under JDK

Accept the license and click on the link opposite to your operating system.Here my operating system is windows 64 bit. so i clicked on jdk-7u9-windows-x64.exe.your download starts now as shown below.

Installing and configuring Java under Linux

Now, you have downloaded the latesr version of java for your linux system.You just unpack the archive into a folder under /usr.java

Open the terminal

Create  folder /usr/java

#mkdir -p /usr/java

 change the present working directory to /usr/java.

#cd /usr/java

Change permission on java installation folder (downloaded one)

#chmod +X   jdk-XXX.sh

Now install with .sh

#/bin/sh ./jdk-XXX.sh

your java installation will starts.After completion of installation set environmental variables as follows.Set JAVA_HOME as follows.

#export JAVA_HOME=/usr/java/jdk1.7.0.9

set PATH variable as follows

#export PATH=$JAVA_HOME/bin:$PATH

Check your java version with following utility.

#which java

#java -version

If the above command returning the version you installed, then you installed and configured java correctly under linux environment.

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