Invoking CMD line or any process through Java Program

package com.useHtmlUnit;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;


public class PsExec {

   public void execute() throws IOException
   {
   
     //use "the path of exe file (windows)", "CMD" , "Parameters")
    ProcessBuilder pb = new ProcessBuilder("C:\\PsTools\\PsExec.exe", "ping", "www.google.com");
    Process p = pb.start();
   InputStream is=p.getInputStream();

InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line=br.readLine();
 
    System.out.println(line);

 while (line!= null)
 {
  System.out.println(line);
  }
//  pb.redirectErrorStream(true);
   
}
 
public static void main(String args[]) throws IOException
{
PsExec p=new PsExec();
p.execute();
System.out.println("completed!");
}
}