Switching between Java versions

.bashrc

# Goes in ~/.bashrc

export JAVA8_HOME=<PATH TO JDK 8>
export JAVA7_HOME=<PATH TO JDK 7>
export JAVA6_HOME=<PATH TO JDK 6>
export JAVA_HOME=$JAVA6_HOME

function go8 {
    export JAVA_HOME=$JAVA8_HOME
    export PATH=$JAVA_HOME/bin:$PATH
}

function go7 {
    export JAVA_HOME=$JAVA7_HOME
    export PATH=$JAVA_HOME/bin:$PATH
}

function go6 {
    export JAVA_HOME=$JAVA6_HOME
    export PATH=$JAVA_HOME/bin:$PATH
}