Install JDK 5 in RHEL4

JDK installation in Linux is relatively easy. Take JDK 5 as an example: JDK.

JDK installation in Linux is relatively easy. Take JDK 5 as an example:

: Http://java.sun.com/j2se/1.5.0/download.jsp

Download JDK1.5 latest bin version such as: jdk-1_5_0_12-linux-i586.bin to specified directory

Execute the sh jdk-1_5_0_12-linux-i586.bin file to decompress the generated directory and copy it to the specified directory, such as:/usr/share.

The JDK directory is/usr/share/. In this example, It is/usr/share/jdk1.5.0 _ 12.

Vi/etc/profile

Join:

JAVA_HOME = "/usr/share/jdk1.5.0 _ 12"

PATH = $ PATH: $ JAVA_HOME/bin

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

Export PATH JAVA_HOME

The environment variable takes effect if you log out of the user or restart the machine.

Run java-version on the terminal. if the version you want to install is displayed, the installation is successful. In this example, it is: java version "1.5.0 _ 12"

If the version number is incorrect, check whether other versions have been installed before. delete the previously installed version. If JAVA-related options are selected during linux installation, the/usr/bin directory contains the java executable file, which can be renamed or deleted.