CODEWITHSUNDEEP
javaswingjcheckbox
Yong Gon Evan Park
Yong Gon Evan Park

Reputation: 33

Java Swing two Action Listeners on one JCheckBox

I have a JCheckBox with action listener implemented.

Here, when it's checked, something appears and when not checked, the appearance disappears.

To implement this, should I have two action listeners? How do I implement this?

Upvotes: 2

Views: 97

Answers (2)

Luffy
Luffy

Reputation: 1335

you can use ActionListener for this and when that action is fired you can check it's selected or not

final JCheckBox checkBox = new JCheckBox("My checkbox"); 
checkBox.addActionListener(new ActionListener()
{
    @Override
    public void actionPerformed(ActionEvent e)
    {
        // check if checkBox is selected or not
        if(checkBox.isSelected()){
            // here you can fire an event in which your checkbox is mark as selected
            // and you can display the value you want to display
        } else{
            // checkBox is not selected so you can fire an event in which your checkbox is not selected
        }
    }
}

Upvotes: 3

MadProgrammer
MadProgrammer

Reputation: 347194

You have a single ActionListener and you check the selected state of the JCheckBox through the use of it's isSelected property. A ActionListener can not distinguish states on it's own, it simply responds to a user input

See How to Use Buttons, Check Boxes, and Radio Buttons and How to Write an Action Listeners for more details.

Upvotes: 2

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