TextField is not getting updated when setText("...") is called?

Question

I am currently developing MineSweeper in java.In that I have to update JTextFields(as shown in Fig.) When I call setText(), Logger shows it is properly called. But in output there is no response.

enter image description here

My Actual code is as Below...

class GameInfoDisplayer{
          ...............
void setGameStatusText(String s){
    statusDisplayer.setStatus(s);
}
          ..............
 <....Definition of TimeController Inner class Comes here....>
    ..............
private class StatusDisplayer{
    JTextField displayField;
    Logger logger = Logger.getLogger("StatusDisplayer");
    StatusDisplayer(){
        displayField = new JTextField();
        gameInfoFieldsContainer.add(displayField);
    }
    void setStatus(String s){
            gameInfoFieldsContainer.remove(displayField);
            displayField.setText(s);        
            gameInfoFieldsContainer.add(displayField);
            gameInfoFieldsContainer.revalidate();
            gameInfoFieldsContainer.repaint();  
            logger.info("I am in updating Display content...:"+displayField.getText());
        }
    }

I did all repainting, revalidating as given in similar question but there is no use..

It is difficult to tell the problem with the info available. Many Swing problems with 'strange' behavior occur because updating is not done on the event dispatch thread; make sure you are using invokeAndWait or invokeLater as needed. — arcy, Dec 01 '11 at 11:24
Are you calling `new StatusDisplayer()` or something of the sort before calling `setStatus()`? The textfield isn't actually defined until you call `new StatusDisplayer()`, so calling `setStatus()` first causes a NullPointerException. — fireshadow52, Dec 01 '11 at 11:37
@fireshadow52 I call new StatusDisplayer() in the constructor of GameInfoDisplayer. (That was not shown here). — Muthu Ganapathy Nathan, Dec 01 '11 at 11:40
@EAGER_STUDENT *Before* calling `setGameStatusText()` I'm assuming? — fireshadow52, Dec 01 '11 at 11:42
Why would you remove and then add back the same component? All you need to do is invoke the setText() method (assuming you have a reference to the text field that is displayed on the GUI). — camickr, Dec 01 '11 at 15:54

score 1 · Answer 1 · answered Dec 01 '11 at 23:02

Try the following

private class StatusDisplayer{
    JTextField displayField;
    Logger logger = Logger.getLogger("StatusDisplayer");
    StatusDisplayer(){
        displayField = new JTextField();
        gameInfoFieldsContainer.add(displayField);
    }
    void setStatus(String s){
            displayField.setText(s);        
            logger.info("I am in updating Display content...:"+displayField.getText());
        }
    }
}

TextField is not getting updated when setText("...") is called?

1 Answers1