Environment variables for java installation

Question

How to set the environment variables for Java in Windows (the classpath)?

Answer 1

For Windows 7 users:

Right-click on My Computer, select Properties; Advanced; System Settings; Advanced; Environment Variables. Then find PATH in the second box and set the variable like in the picture below.

Answer 2

Set java Environment variable in Centos / Linux

/home/ vi .bashrc

export JAVA_HOME=/opt/oracle/product/java/jdk1.8.0_45

export PATH=$JAVA_HOME/bin:$PATH

java -version