Multiple Java JDK envs on your MacOSX Path

#export CUSTOM HOME(S) variables

#last JDK 6 by Apple
export JAVA_6_HOME=/System/Library/Frameworks/JavaVM.framework/Home
#latest JDK 7 by Oracle
export JAVA_7_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_13.jdk/Contents/Home
#latest preview JDK 8 by Oracle
export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home

#default JDK is  7
export JAVA_HOME=$JAVA_7_HOME

#Make aliases to switch from one to another
alias java6='export JAVA_HOME=$JAVA_6_HOME'
alias java7='export JAVA_HOME=$JAVA_7_HOME'
alias java8='export JAVA_HOME=$JAVA_8_HOME'