bash function to set java version in mac

setJDK.bash

## remove a path from PATH
function removeFromPath() {
    export PATH=$(echo $PATH | sed -E -e "s;:$1;;" -e "s;$1:?;;")
}

## set JAVA env with given version
function setJDK() {
    if [ $# -ne 0 ]; then
        removeFromPath '/System/Library/Frameworks/JavaVM.framework/Home/bin'
        if [ -n "${JAVA_HOME+x}" ]; then
            removeFromPath $JAVA_HOME
        fi
        unset JAVA_HOME
        export JAVA_HOME=`/usr/libexec/java_home -v $@`
        export PATH=$JAVA_HOME/bin:$PATH
        java -version
        javac -version
    fi
}