I am doing this to compile my Java application

Question

Hi, I am doing this when I click on a button in my application to compile my application in an editor. But my application gets hanged when I do this. Could any one correct me where I am wrong.
Thanks
File file;
JTextPane textForJIF;
JTextArea compileArea;
          if(ae.getSource().equals(compileJavaB) || ae.getSource() == javac)
                    try{
               if ( textForJIF.getText().length() > 0 )
                    //File file = frame.getFile();
                    String fileName1 = file.getName();
                    String pathName = file.getPath(),fileName = file.getName();
                    if ( !fileName.endsWith(".java") )
                         return;
                    //String dirPath = file.getParent();
                    String currentDir = file.getParent();
               Runtime rt = Runtime.getRuntime();
               startTime = System.currentTimeMillis();
          Process p = rt.exec( command, null, new File( currentDir ) );
          BufferedReader reader1 = new BufferedReader(new InputStreamReader(p.getInputStream()));
               BufferedReader reader2 = new BufferedReader(new InputStreamReader(p.getErrorStream()));
               endTime = System.currentTimeMillis() - startTime;
               long lg = endTime/1000;
               String time = "Time taken: " + lg + "." + (endTime-lg*1000) + " seconds.";
               String result = "Java Compiler"+ p + "Time taken:"+time;
               String message = "Result";
               //for(int i=0;i<10;i++)
                    String message1 = reader1.readLine();
                    System.out.println("message1:"+message1);
                    String messageIn = reader2.readLine();
                    System.out.println("messageIn:"+messageIn);
               //     if(messageIn == null)     break;
                    message = messageIn+"\n"+message;
               System.out.println("message is:"+message);
               compileArea.setText(message);
               //compileArea.append(result);
               p.destroy();
               }catch(Exception ex) { System.out.println(ex); }

Answer 1

What is the error you are getting?