java version switch

.bash_profile

useJava () {
  JDK6="/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home"
  JDK7="/Library/Java/JavaVirtualMachines/jdk1.7.0_67.jdk/Contents/Home"
  JDK8="/Library/Java/JavaVirtualMachines/jdk1.8.0_20.jdk/Contents/Home"

  case "$1" in
          "6")
                  echo "Using JDK6: ${JDK6}"
                  export JAVA_HOME="{$JDK6}/bin"
                  export PATH="${JAVA_HOME}:${PATH}"
                  java -version
                  ;;
          "7")
                  echo "Using JDK7: ${JDK7}"
                  export JAVA_HOME="{$JDK7}/bin"
                  export PATH="${JAVA_HOME}:${PATH}"
                  java -version
                  ;;
          "8")
                  echo "Using JDK8: ${JDK8}"
                  export JAVA_HOME="${JDK8}/bin"
                  export PATH="${JAVA_HOME}:${PATH}"
                  java -version
                  ;;
          *)
                  echo "Unknown JDK version! Specify 6, 7 or 8!"
                  ;;
  esac
}

# useJava 6