Cannot run command window

Question

In Windows I would expect to call up a seperate command window with the following, but it appears to freeze up. What am I doing wrong?
import java.io.*;
public class command {    
  public static void main(String[]args) {
    try {
      Process runprogram = Runtime.getRuntime().exec("C:\\windows\\system32\\cmd.exe");
      try {
        runprogram.waitFor();
      catch(InterruptedException e){}
    catch(IOException e) {
      System.err.println("Cannot run command window");
}

Answer 1

What about this...
    Process proc = null;
    try
      proc = Runtime.getRuntime().exec("start cmd");
      proc.waitFor();
    catch(Exception e)
      e.printStackTrace();
    }Some dukies would be nice next time ;-)