javaenv.zsh

function javaenv() {
  local err specified
  if [[ -z `echo $1` ]]; then
    echo $JAVA_HOME    
    return    
  fi    
  err=`/usr/libexec/java_home -v $1 2>&1 >/dev/null`    
  if [[ -n $err ]] then    
    echo $err    
    return    
  fi    
  specified=`/usr/libexec/java_home -v $1`    
  echo "export JAVA_HOME=$specified"    
  export JAVA_HOME=$specified    
  export PATH=$JAVA_HOME/bin:$PATH    
}