pj code

gistfile1.java

import java.io.*;

public class JavaSystemCalls {

   public static void main(String args[]) {

       String s = null;
       

       try {
           
       BufferedReader stdin = new BufferedReader
           (new InputStreamReader(System.in));
           String message; // Creates a varible called message for input

         System.out.print ("Enter the message : ");
         System.out.flush(); // empties buffer, before you input text
         message = stdin.readLine();
         
         Process p = Runtime.getRuntime().exec(message);
           
         BufferedReader stdInput = new BufferedReader(new 
                InputStreamReader(p.getInputStream()));

         BufferedReader stdError = new BufferedReader(new 
                InputStrea
BufferedReader stdInput = new BufferedReader(new 
                InputStreamReader(p.getInputStream()));

         BufferedReader stdError = new BufferedReader(new 
                InputStreamReader(p.getErrorStream()));

         System.out.println("Command:\n");
         
         while ((s = stdInput.readLine()) != null) {
             System.out.println(s);
         }
           
         
         System.out.println("Error in reading:\n");
         while ((s = stdError.readLine()) != null) {
             System.out.println(s);
         }
           
           System.exit(0);
       }
       catch (IOException e) {
           System.out.println("Exception in execution ");
           e.printStackTrace();
           System.exit(-1);
       }
   }
}