Linux JDK environment variable configuration

I. wget command download JDK wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" download.oracle.com/otn-pub/java/jdk/8u111-b14/jdk-8u111-linux-x64.tar.gztwo. Extracting FilesTAR-ZXVF jdk-8u111-linux-x64.tar.gz three. Set environment variables (three ways)The first type is configured in/usr/profile:Vi/usr/profileExprot java_home=/usr/local/jdk1.8.0_111
Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar
Exprot path= $JAVA _home/bin: $PATH

Source/usr/profile Making changes effective

The second is configured in the current user's. Bash_profile (root user in/root):

Operation is the same as the first method

We need source/usr/profile .

The third current shell is set directly below

Four, to see if the command was executed successfully Java-version

Uninstalling the JDK
_uninst subdirectory of the JDK installation directory
The shell terminal executes the command ./uninstall.sh

Note: If you encounter the source is not good to make recommendations to check your own configuration of the code if there is a problem (typos or something)

Linux JDK environment variable configuration