Java GUI (graphical user interface) exercises

6.1.3 A simple GUI program

Package six;
 Import javax.swing.*;
 Import java.awt.*;
 Import java.awt.event.*;
 
public class Main {
	private static int numclicks = 0;  Record number
	private static JFrame frame = new JFrame ("Simple GUI");
	private static JLabel label = new JLabel (Button click Number: + 0    );
	private static JButton button = new JButton ("click Me.") ~~~");
	private static JPanel pane = new JPanel ();  Container public
	
	static void Main (string[] args) {
		pane.setborder (Borderfactory.createemptyborder (60,60,20,60) );
		Pane.setlayout (new GridLayout (0,1));  Set the layout
		pane.add (button);
		Pane.add (label);
		Frame.getcontentpane (). Add (pane,borderlayout.center);
		Button.setmnemonic (keyevent.vk_i);
		
		Button.addactionlistener (new ActionListener () {  //mouse click event public
			void actionperformed (ActionEvent e) {
				numclicks++;
				Label.settext ("button click Number:" +numclicks);
			}
		);
		Frame.setdefaultcloseoperation (jframe.exit_on_close);
		Frame.pack ();
		Frame.setvisible (True);
	}

        

6.4.2 using FlowLayout layout Manager

FlowLayout can automatically adjust the layout depending on the size of the window

Package six;
 Import javax.swing.*;
 Import java.awt.*;
 Import java.awt.event.*;
 
public class Main {
	JButton b1,b2,b3,b4,b5;
	JFrame frame;  Form public
	void display () {
		frame = new JFrame ("Test book layout manager");
		Frame.setdefaultcloseoperation (Jframe.exit_on_close);
		B1 = new JButton ("button 1");
		b2 = new JButton ("button 2");
		B3 = new JButton ("button 3");
		B4 = new JButton ("button 4");
		B5 = new JButton ("button 5");
		FlowLayout FlowLayout = new FlowLayout (); Sequential layout manager
		Container ContentPane = Frame.getcontentpane ();  Container
		contentpane.setlayout (flowlayout);
		Contentpane.add (B1);
		Contentpane.add (B2);
		Contentpane.add (b3);
		Contentpane.add (b4);
		Contentpane.add (B5);
		Contentpane.setsize (200,100);
		Frame.pack ();
		Frame.setvisible (true);
		public static void Main (String[]args)
		{
			new Main (). display ();//silly B
		}
}
        

6.4.3 using the Regional layout manager borderlayout

In the borderlayout, how to scale, the North and South always maintain the best height.

Package six;
 Import javax.swing.*;
 Import java.awt.*;
 Import java.awt.event.*;
 
public class Main {
	JButton b1,b2,b3,b4,b5;
	JFrame frame;  Form public
	void display () {
		frame = new JFrame ("Test book layout manager");
		Frame.setdefaultcloseoperation (Jframe.exit_on_close);
		B1 = new JButton ("button 1");
		b2 = new JButton ("button 2");
		B3 = new JButton ("button 3");
		B4 = new JButton ("button 4");
		B5 = new JButton ("button 5");
		BorderLayout borderlayout = new BorderLayout ();
		Container ContentPane = Frame.getcontentpane ();  Container
		contentpane.setlayout (borderlayout);
		Contentpane.add (b1,borderlayout.east);
		Contentpane.add (b2,borderlayout.west);
		Contentpane.add (B3,borderlayout.south);
		Contentpane.add (B4,borderlayout.north);
		Contentpane.add (b5,borderlayout.center);
		Contentpane.setsize (200,100);
		Frame.pack ();
		Frame.setvisible (true);
		public static void Main (String[]args)
		{
			new Main (). display ();//silly B
		}
}
        

6.4.5 Card Layout Manager cardlayout

The card layout manager takes the container as a card and only one card is visible at a time.

Package six;
 Import javax.swing.*;
 Import java.awt.*;
 Import java.awt.event.ActionEvent;
 
 
Import Java.awt.event.ActionListener;
	public class Main extends jframe{//class main inherits from JFrame private JPanel pane = null;
	Private JPanel p = null;
	Private CardLayout card = null;
	Private JButton button_1 = null;
	Private JButton button_2 = null;
	Private JButton B1 = null,b2 = NULL,B3 = null;
	Private JPanel P1 = null,p2 = NULL,P3 = null;
		Public Main ()//{super ("Card layout manager test");
		try{Uimanager.setlookandfeel ("Com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
		catch (Exception ex) {ex.printstacktrace ();
		//Create a new card layout cards = CardLayout (5,5);
		pane = new JPanel (card);
		p = new JPanel ();
		button_1 = new JButton ("< previous step");
		button_2 = new JButton ("Next >");
		B1 = new JButton ("1"); b2 = new JButton ("2"); B3 = new JButton ("3");
		B1.setmargin (New Insets (2,2,2,2));
		B2.setmargin (New Insets (2,2,2,2));
		B3.setmargin (New Insets (2,2,2,2)); P.add (button_1);p. Add (B1);p. Add (B2);p. Add (B3);p. Add (button_2);
		P1 = new JPanel ();
		P2 = new JPanel ();
		P3 = new JPanel ();
		P1.setbackground (color.red);
		P2.setbackground (Color.Blue);
		
		P3.setbackground (Color.green);
		P1.add (New JLabel ("Jpanel_1"));
		P2.add (New JLabel ("jpanel_2"));
		P3.add (New JLabel ("Jpanel_3"));
		
		Pane.add (P1, "P1");p Ane.add (P2, "P2");p Ane.add (P3, "P3"); Flip Card Layout Action Button_1.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {Card.prev
			IOUs (pane);
		}
		});
			Button_2.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {card.next (pane);
		}
		});
			B1.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {card.show (pane, "P1");
		}
		});
			B2.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {card.show (pane, "P2");
		}
		}); B3.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {Card.sHow (Pane, "P3");
		}
		});
		This.getcontentpane (). Add (pane);
		This.getcontentpane (). Add (P,borderlayout.south);
		This.setdefaultcloseoperation (Jframe.exit_on_close);
		This.setsize (300, 200);
	This.setvisible (TRUE);
         public static void Main (String[]args) {new Main ();//Silly B}}