Installation of jdk in linux and configuration of Environment Variables

Installation of jdk in linux and configuration of Environment Variables

Jdk-7u71-linux-i586.tar.gz

Jdk-7u75-linux-x64.tar.gz

1. Upload a package

2. view the installer

Rpm-qa | grep-I jdk

3. Delete the specified jdk

Rpm e java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.i686

Rpm e java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.i686

4. Check whether the installer is deleted again.

Rpm-qa | grep-I jdk

5. Enter the jdk directory to decompress the package.

Tar-xvf jdk-7u71-linux-i586.tar.gz

6. Create a directory for storing jdk

Mkdir-p/usr/local/jdk

7. Move the decompressed jdk to the newly created directory.

Mv jdk1.7.0 _ 71 // usr/local/jdk/

8. Go to the/usr/local/jdk/jdk1.7.0 _ 75/directory.

Cd/usr/local/jdk/jdk1.7.0 _ 75/bin

9. test whether the jdk is successfully executed.

./Java-version

10. Enable System Environment Configuration

Vim/etc/profile

Open/etc/profile in a text editor

Add the following content to the end of the profile file:

Export JAVA_HOME =/usr/share/jdk1.6.0 _ 14

Export PATH = $ JAVA_HOME/bin: $ PATH

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

12. recompilation takes effect

Source/etc/profile

/Usr/local/jdk/jdk1.7.0 _ 75/