debug jar in command (using IDE like eclipse to connect)

jardbg

#! /bin/bash

DEFAULT_PORT=9009;
port=$DEFAULT_PORT;

pring_usage(){
    echo "Usage:  jardb [-p=port default: $DEFAULT_PORT] target-jar";
}

while getopts ":p:h" optname
  do
    case "$optname" in
      "p")
        port=$OPTARG;
        ;;
      "h")
        pring_usage;
        exit 0;
        ;;
      *)
        # Should not occur
        echo "Unknown error while processing options";
        exit 1;
        ;;
    esac
  done

target_jar=${@: -1};

if echo "$target_jar" | grep -e ".*jar" 
then
   java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=$port -jar "$target_jar";
else
    echo "Miss target jar file";
fi