java_home

#/usr/libexec/java_home -V

export M2_HOME=/usr/local/src/apache-maven-3.2.3
export M2=$M2_HOME/bin
export PATH=$M2:$PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_72.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH