CODEWITHSUNDEEP
javaswingjbuttonactionlistener
Sam Liokumovich
Sam Liokumovich

Reputation: 101

How to see if a button has been pressed from another class

I have a dilema. This might sound stupid but i have no idea how to do this. I have a password class and a main screen. My main screen has a button that when pressed pops up the password class. Here is the call to the passwordClass from an actionlistener on my main class.

public PasswordClass login(){
        pressMe.setVisible(true);
        String player="?";
        final String playerT = player;
        boolean nameCorrect = false;
        final PasswordClass hold = new PasswordClass(null); 
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    //Turn off metal's use of bold fonts
            UIManager.put("swing.boldMetal", Boolean.FALSE);
            PasswordClass.createAndShowGUI();   
                }
            });
        return hold;
        }

the return statement isn't anything related to this I never used it but I had it their for testing purposes. In my password class i have a boolean that tells me if the user input matches the correct login info. i call it worked i run the password class and i had the problem that while the window is popping up my code to check if it worked is running simultaneously. This is a problem because i only want to check if it worked after the user has pressed ok. Here is the code

 public void actionPerformed(ActionEvent ae)
    {
    else if(ae.getActionCommand().equals("Login")){
    login();
    }
    else if(ae.getActionCommand().equals("Press Me To Continue")){
    if(PasswordClass.worked){
    //worked is a static variable from the PasswordClass class              
    }
    pressMe.setVisible(false);
    }
    }

So whenever OK is pressed on The PasswordClass JFrame a little button pops up and asks a SECOND time for it to save. I want it to save from the first OK button. The reason i make another button is because i don't know how to stop and wait for the OK button to be pressed. My if loop to check if it worked already returns false automatically before the user presses OK. That is my problem and I am really confused on how to solve it. Any help? If any more code is needed I will provide it but i think this is enough.

Upvotes: 0

Views: 848

Answers (2)

ash
ash

Reputation: 5155

There needs to be some form of synchronization between the objects (not necessarily related to the statement of that name).

If the code that wants to check the result wants to block until the result is set, you could use a CountDownLatch: the actionPerformed method calls CountDownLatch.countDown() while the other code calls CountDownLatch.await().

On the other hand, if the code checking the result does not want to block, then a simple two-boolean approach would work well. Have one boolean indicate whether the button press complete and the other to tell whether OK was the button pressed.

Upvotes: 0

MadProgrammer
MadProgrammer

Reputation: 347194

The reason i make another button is because i don't know how to stop and wait for the OK button to be pressed

Use a modal dialog of some kind, see How to Make Dialogs for more details

Conceptually, you want to display a modal dialog, which prompts the user for some information, while blocking at the point in your code that the dialog was made visible. When the dialog is dismissed (for what ever reason), you'll want to check the results from the dialog and take appropriate actions based on what the user did

Upvotes: 1

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