CODEWITHSUNDEEP
java
KevKelders
KevKelders

Reputation: 17

Boolean value changing button click

What would be the most simple solution each time a user presses a certain button the bool value changes? The only thing in my button action listener would be a call to a certain method for example Method1(); Or would working with a int be a more viable solution?

Thanks.

Upvotes: 1

Views: 7863

Answers (4)

Dan Osborne
Dan Osborne

Reputation: 94

I think this is exactly what your looking for!! Hope it helps.

    private boolean booly; 

private class WinkAction implements ActionListener
{
    public void actionPerformed(ActionEvent e) 
    {

        if (!booly){
            booly = true; 

        }else {
            booly = false;


        }

    }
}

Upvotes: 1

Andrew Thompson
Andrew Thompson

Reputation: 168845

I would recommend using a JToggleButton or JCheckBox for this case. It would be more natural to the user and either component can store it's state without declaring any further booleans.

E.G.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class ToggleButton {

    public static void main(String[] args) {

        final JLabel result = new JLabel("Hit the button!");

        final JToggleButton switchButton = new JToggleButton("Switch");
        switchButton.addActionListener( new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                result.setText("" + switchButton.isSelected());
            }
        } );

        JPanel p = new JPanel(new GridLayout(0,1));
        p.add(switchButton);
        p.add(result);

        JOptionPane.showMessageDialog(null, p);
    }
}

Upvotes: 1

drekka
drekka

Reputation: 21893

Even simpler:

buttonFlag = ! buttonFlag;

Upvotes: 7

Neigyl R. Noval
Neigyl R. Noval

Reputation: 6038

Have a flag variable on the fields in your class.

Example:

private boolean bottonFlag = false.

in your method do:

bottonFlag = bottonFlag == true ? false : true; // this is to switch between true and false

Upvotes: 1

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