Question

i have a Jframe (Mainz),

it have a button (showDialog),

when user click the button,

jdialog (Dialogz) will show,

that jdialog have a button

• how to close jdialog from that button (inside jdialog)?
• can i change the modal of dialog after i create instance of it?

i need to block the owner of that jdialog

heres i try …

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;


    public class Mainz extends JFrame implements ActionListener{
        JButton showDialog = new JButton("show dialog");

        public Mainz() {
            setLayout(new FlowLayout());
            showDialog.addActionListener(this);
            add(showDialog);
            setVisible(true);   
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            new Dialogz(this, true);
        }

        public static void main(String[]args){
            new Mainz();
    }
    }
    class Dialogz extends JDialog{
        JButton close = new JButton("close");

        public Dialogz(JFrame owner,boolean modal) {
            super(owner, modal);
            System.out.println(this.getModalityType());
            add(close);
            setLocationRelativeTo(owner);
            setVisible(true);

            close.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae){
                    closez();
                }
            });
        } 

        void closez(){
            setModal(false);
            this.dispose();
            System.out.println("Method Done");

        }
    }

thanks a lot for any kind of help

Answer 1

can i change the modal of dialog after i create instance of it?

yes you can to change setModal or ModalityTypes on runtime, but for code in this form doesn’t make me any sence

how to close jdialog from that button (inside jdialog)?

in this case doesn’t matter if you’ll to call setVisible or dispose()

---

• create JDialog only one time,

• create that as local variable

• change myDialog.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);, then button in the toolbar (with X) to hide JDialog too

• then you can to call from actionPerformed only myDialog.setVisible(true) and ModalityType too if required, setVisible shoud be wrapped in invokeLater(), instead of creating a new instance (new Dialogz(this, true); )

• JButton placed in JDialog will be called only myDialog.setVisible(false)

• example corresponding with your logics