Anonymous

  public String factor(int x) {      String line="";      try {         Runtime rt=Runtime.getRuntime();         Process pr=rt.exec("factor "+x);         java.io.BufferedReader reader=new java.io.BufferedReader(new java.io.InputStreamReader(pr.getInputStream()));         line=reader.readLine();         System.out.println(line);      } catch(Exception e) {         e.printStackTrace();         System.exit(-1);      }      return line;   }