ssh - How to use "sudo su" in java command -

i trying use sshxcute class connect unix machine , kill zombie processes.but below program hangs. please me out.

public class sshexecute {      /**      * @param args      */      public static void main(string[] args) {        // todo auto-generated method stub         connbean cb = new connbean("stage2c7400.qa.com", "rmeena", "sample");         // put connbean instance parameter sshexec static method getinstance(connbean) retrieve singleton sshexec instance         sshexec ssh = sshexec.getinstance(cb);                   // connect server         ssh.connect();         customtask sampletask = new execcommand("sudo su -; ps -ef |grep defunct");          //customtask sampletask1 = new execcommand("ls -lrt");         try {             result s = ssh.exec(sampletask);             system.out.println("************"+s.sysout+"***********");              } catch (taskexecfailexception e) {             // todo auto-generated catch block             e.printstacktrace();         }                 ssh.disconnect();      }  } 

i dunno ur environments but.. try one.

process p = new processbuilder("sudo").start(); p.getoutputstream().write("su -; ps -ef | grep defaunct".getbytes());  p.getoutputstream().write("exit\n".getbytes());  p.getoutputstream().flush();  p.getoutputstream().close();