// @topic T11645 Swing demo A4 -- Close Window Box
// @brief JFrame.addWindowListener() JButton
/**
 * @author ik
 */

package pckg;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.text.*;

public class SwingMain
{
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }//main

    public static void createAndShowGUI() {
        // Swing test
        setSystemLookFeel();
        JFrame frame = new JFrame("JFrame is me");
        frame.setBounds(0, 0, 400, 300);
        frame.addWindowListener(new java.awt.event.WindowAdapter()
        {
            public void windowClosing(java.awt.event.WindowEvent ev)
            { System.exit(0); }
        }
        );

        JPanel jpan = new JPanel();
        frame.getContentPane().add(jpan);
        JButton jbut = new JButton("Hello");
        jpan.add(jbut);

        frame.setVisible(true);
    } //createAndShowGUI
    
    // Setting OS-specific look and feel:
    private static void setSystemLookFeel()
    {
        // Force GUI to come up in the OS-specific look and feel
        String laf = UIManager.getSystemLookAndFeelClassName();
        try
        {
            UIManager.setLookAndFeel(laf);
        }
        catch (UnsupportedLookAndFeelException exc)
        {
            System.err.println("Unsupported: " + laf);
        }
        catch (Exception exc)
        {
            System.err.println("Error loading " + laf);
        }
    }//setSystemLookFeel
} //SwingMain