How do I install the JDK in Linux?

Installing the JDK in Linux is as follows:

1. Download the JDK from the internet first, download it and put it in the/home directory, but other places are OK.

Enter the installation directory

#cd/home

#cp jdk-1_6_0_03-linux-i586.rpm/usr/local

#cd/usr/local

To add an executable permission to all users

#chmod +x Jdk-1_6_0_03-linux-i586.rpm.bin

#./jdk-1_6_0_03-linux-i586.rpm.bin

The file jdk-1_5_0_02-linux-i586.rpm is generated and the executable permissions are added to all users

#chmod +x jdk-1_5_0_02-linux-i586.rpm

Setup program

#rpm-IVH jdk-1_5_0_02-linux-i586.rpm

The installation protocol appears, and so on, press accept.

2. Set environment variables.

#vi/etc/profile

On the last side join

#set Java Environment

Java_home=/usr/jdk-1_6_0_03

Classpath=.: $JAVA _home/lib.tools.jar

Path= $JAVA _home/bin: $PATH

Export Java_home CLASSPATH PATH

Save exit.

3. Use the echo command at the terminal to check environment variable settings.

#echo $JAVA _home

#echo $CLASSPATH

#echo $PATH

4. Check that the JDK is installed successfully.

#java-version

If you see the JVM version and related information, the installation is successful!