Installing JDK under Linux

JDK Installation steps:

1. Unzip the JDK package. : TAR-ZXVF jdk-7u51-linux-x64.gz

2. Move the JDK to/usr/local/java/jdk1.7.0_51 (install according to your own situation)

MV jdk1.7.0_51//usr/local/java/jdk1.7.0_51
3. Configure environment Variables for Linux: vi/etc/profile

Press the I key to enter insert mode
Add at the end of the file (Shift+g moves the cursor to the end)
Java_home=/usr/local/java/jdk1.7.0_51
Path= $PATH: $JAVA _home/bin
Classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

Export Java_home
Export PATH
Export CLASSPATH
Attention. What we need to focus on is the JDK path in Java_home. Be sure to give the correct JDK the absolute path

4. Input: Wq (save and exit)

5. Reload the profile file:. /etc/profile
6. See if the environment variable is configured successfully: Java-version

7. End

Installing JDK under Linux