#!/bin/bash

application_name='xxxx.jar'

PID=$(ps -ef | grep $application_name | grep -v grep | awk '{print $2}')

if [ -z "$PID" ]
then
  echo $application_name has already stopped
else
  echo kill $PID
  kill $PID
fi

nohup java -jar -Xms2048M -Xmx4096M -server $application_name &
tail -f nohup.out