Close JFrame pane when button is clicked

Question

I'm trying to use close the pane from an airplane seat system, so each passenger chooses only 1 seat. I researched and know I need a line of code JFrame.dispose(); But I don't know where to put it and what else to put it. Thoughts? (Other than that I'm a complete noob XD)

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

public class APlaneJToggle {

private int rows = 15;
private int columns = 6;
private Icon res = (UIManager.getIcon("OptionPane.errorIcon"));

public APlaneJToggle() {
    JPanel panel = new JPanel(new GridLayout(rows, columns));
    for (int row = 0; row < rows; row++) {
        String []rowChar = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
        for (int column = 1; column < columns+1; column++) {

            final JToggleButton button = new JToggleButton(rowChar[row] + column);
            button.addActionListener(new ActionListener(){

                    @Override
                    public void actionPerformed(ActionEvent actionEvent) {
                        AbstractButton abstractButton = (AbstractButton) actionEvent.getSource();
                        boolean selected = abstractButton.getModel().isSelected();
                        if (selected) {
                            button.setIcon(res);
                        } else {
                            button.setIcon(null);
                        }
                    }
                });
            panel.add(button);
        }
    }
    final JFrame frame = new JFrame("Flight");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(panel);
    frame.pack();
    frame.setLocation(300, 100);
    frame.resize(750,450);
    frame.isDefaultLookAndFeelDecorated();
    frame.setVisible(true);
}

public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                APlaneJToggle aPlaneJToggle = new APlaneJToggle();
            }
        });
}
}

Answer 1

You could use SwingUtilities.getWindowAncestor to return the Window which a component resides in, this way you could dispose on the returned result.

import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToggleButton;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private int rows = 15;
        private int columns = 6;

        public TestPane() {
            setLayout(new GridLayout(rows, columns));
            for (int row = 0; row < rows; row++) {
                String[] rowChar = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};
                for (int column = 1; column < columns + 1; column++) {

                    final JToggleButton button = new JToggleButton(rowChar[row] + column);
                    button.addActionListener(new ActionListener() {

                        @Override
                        public void actionPerformed(ActionEvent actionEvent) {
                            AbstractButton abstractButton = (AbstractButton) actionEvent.getSource();
                            boolean selected = abstractButton.getModel().isSelected();
                            if (selected) {
                                button.setText("X");
                            } else {
                                button.setText("");
                            }
                            SwingUtilities.getWindowAncestor(button).dispose();
                        }
                    });
                    add(button);
                }
            }
        }

    }

}

You might consider using a JDialog instead of a JFrame as it will allow you to control the program flow better. Have a look at How to Make Dialogs for more details