Install JDK in Linux

Install JDK Linux Step 1. First download jdk (jdk-1_5_0_02-linux-i586.rpm) from the Internet, recommended SUN official website www.sun.com, download and put in the/home directory, of course, other places also.

Go to the installation directory

# Cd/home

# Cp jdk-1_5_0_02-linux-i586.rpm/usr/local

# Cd/usr/local

Add executable permissions to all users

# Chmod + x jdk-1_5_0_02-linux-i586.rpm.bin

#./Jdk-1_5_0_02-linux-i586.rpm.bin

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

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

Installer

# Rpm-ivh jdk-1_5_0_02-linux-i586.rpm

If the installation protocol is displayed, simply accept it.

Install JDK in Linux Step 2. Set environment variables.

# Vi/etc/profile

Add at the end

# Set java environment

JAVA_HOME =/usr/java/jdk-1_5_0_02

CLASSPATH =.: $ JAVA_HOME/lib. tools. jar

PATH = $ JAVA_HOME/bin: $ PATH

Export JAVA_HOME CLASSPATH PATH

Save and exit.

To enable JDK to be used by all users, you can:

Vi/etc/profile. d/java. sh

Enter the following content in the new java. sh file:

# Set java environment

JAVA_HOME =/usr/java/jdk-1_5_0_02

CLASSPATH =.: $ JAVA_HOME/lib/tools. jar

PATH = $ JAVA_HOME/bin: $ PATH

Export JAVA_HOME CLASSPATH PATH

Save and exit, and then assign the permission to java. sh: chmod 755/etc/profile. d/java. sh

Install JDK in Linux Step 3. Use the echo command on the terminal to check the environment variable settings.

# Echo $ JAVA_HOME

# Echo $ CLASSPATH

# Echo $ PATH

4. Check whether JDK is successfully installed.

# Java-version

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

Then the installation of JDK in Linux is over and the development door is opened. GOGOGO!