How to enable / disable buttons in java, eclipse?

Question

How can I disable buttons with the press of one button and when the task that the button which has been pressed was assigned to has been done then I want all the buttons to be enabled. for example;

UpButton.addActionListener( new ActionListener() {
    public void actionPerformed(ActionEvent e) {

        DownButton.setEnabled(false);
        LeftButton.setEnabled(false);
        RightButton.setEnabled(false);
        System.out.printline("Up Button");

    }
});
DownButton.addActionListener( new ActionListener() {
    public void actionPerformed(ActionEvent e) {

        UpButton.setEnabled(false);
        LeftButton.setEnabled(false);
        RightButton.setEnabled(false);
        System.out.printline("Down Button");


    }
});
LeftButton.addActionListener( new ActionListener() {
    public void actionPerformed(ActionEvent e) {

        DownButton.setEnabled(false);
        UpButton.setEnabled(false);
        RightButton.setEnabled(false);
        System.out.printline("Left Button");

    }
});
RightButton.addActionListener( new ActionListener() {
    public void actionPerformed(ActionEvent e) {

        DownButton.setEnabled(false);
        LeftButton.setEnabled(false);
        UpButton.setEnabled(false);
        System.out.printline("Right Button");

    }
});

I have tried to do it but it does not work. What I want is, for example, my Upbutton is printing out ("Up button"), so when a user presses this button I want all the other buttons to be disabled until it has finished doing the command that it was suppose to do, in this case print out a text but later on I will be adding things like adding up two user inputs e.g. I will have a button that will ask the user to type number 1 and then number 2 and then the computer will add them up and during this process I want all the buttons to be disabled expect the one that has been clicked on, until the user has given all numbers and the computer has given the output.

I hope I have explained myself properly, if not please let me know and I will try my best to give more information. Thanks in advance.

Solution

How about using Command objects? Each command object might have execute() and canExecute() methods at least. Then;

btnA.setEnabled( cmdA.canExecute() );
btnA.addActionListener( event-> { 
    cmdA.execute();
    btnB.setEnabled( cmdA.canExecute() );
});

Comments

[Admin]

Hi, Rafael both with my method DownButton.setEnabled(false); and your method DownButton.setVisible(false); it says the buttons cannot be resolved. I want the buttons to be visible but disabled if one button is pressed.

[Rafael Carvalhido]

Are the buttons declared(private javax.swing.JButton UpButton;)? Have you imported javax.swing.JButton? Probably so, right?