ubuntu sun-jdk

0. download & tar xvf

1. sudo vim ~/.bashrc

export JAVA_HOME=/usr/lib/jvm/java

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib

export PATH=${JAVA_HOME}/bin:$PATH

2. source ~/.bashrc

3. java -version