1. Java's Graphical User Interface Toolkit
Windows, Applets and all that Swings.

2. What is Swing? A
Swing
Tour

3. The Agenda A Tour of Swing Display A Simple Window from main()
Display A Window from an Object
Display an Object that is a Window
Display an Applet Object
Laying out Display Components
Making Buttons and Stuff Work

4. Starting with an Example
The
Basic
Window

5. The Basic JFrame import javax.swing.*; class BasicJFrame {
public static void main(String[] args) {
JFrame jf = new JFrame("The Basic JFrame");
jf.setSize(250,250);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true); }

6. The Basic JFrame import javax.swing.*; class BasicJFrame {
public static void main(String[] args) {
JFrame jf = new JFrame("The Basic JFrame");
jf.setSize(250,250);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true); }

7. jf = new JFrame("The Basic JFrame")
Setting the title with the constructor.

8. jf.setSize(250, 250)
250 pixels
250 pixels

9. jf.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
Causes the thread for the JFrame
to terminate when window closed.

10. jf.setVisible(true);

11. Adding The JPanel import javax.swing.*; class DoJPanel {
public static void main(String[] args) {
JFrame jf = new JFrame("The Basic JFrame");
jf.setSize(250,250);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel jp = new JPanel();
jf.getContentPane().add(jp);
jf.setVisible(true); }
import javax.swing.*;
class DoJPanel {
public static void main(String[] args) {
JFrame jf = new JFrame("The Basic JFrame");
jf.setSize(250,250);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel jp = new JPanel();
jf.getContentPane().add(jp);
jf.setVisible(true); }
import javax.swing.*;
class BasicJFrame {
public static void main(String[] args) {
JFrame jf = new JFrame("The Basic JFrame");
jf.setSize(250,250);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true); }

12. jf.getContentPane()

13. Jpanel jp = new Jpanel(); jf.getContentPane().add(jp);

14. Top Level Containers
JFrame
JDialog
JApplet
JWindow
JInternalFrame

15. How do I Build a Display Object?
An Object That
Displays a
Window

16. MyWindow public class DoMyWindow {
public static void main(String[] args) {
new MyWindow(); }
public class MyWindow { • }

17. MyWindow Required but not shown. import javax.swing.*;
public class MyWindow { }
Required but not shown.
import javax.swing.*;
import java.awt.event.*;

18. objects and their references
MyWindow
public class MyWindow {
MyWindow() { }
Create all the new GUI
objects and their references
as members here.
Assemble the GUI
objects in the
constructor.

19. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");}

20. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
jf.setVisible(true); }

21. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true); }

22. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true); }

23. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jf.setVisible(true); }

24. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jf.setVisible(true); }

25. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jf.setVisible(true); }

26. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jf.setVisible(true); }

27. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.setVisible(true); }

28. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.setVisible(true); }

29. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.getContentPane().add(jp);
jf.setVisible(true); }

30. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.getContentPane().add(jp);
jf.setVisible(true); }

31. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true); }

32. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true); }

33. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute"); }
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);

34. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute"); }
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);

35. MyWindow public class MyWindow { JFrame jf = new JFrame("MyWindow");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);

36. How Do I Make an Object Visible?
Making an
Object
Display Itself

37. A Change in Structure MyWindow MyWindow2 Creates a JFrame Object
Fills it With Other GUI Objects
Displays the Finished JFrame
MyWindow2
Is a JFrame Object
Fill Itself With Other GUI Objects
MyWindow Displays Itself

38. MyWindow2 public class DoMyWindow2 {
public static void main(String[] args) {
new MyWindow2(); }
public class MyWindow2 { • }

39. MyWindow2 public class MyWindow2 extends JFrame {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
jp.add(jtf);
setVisible(true);
public class MyWindow2 extends JFrame {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);
public class MyWindow2 extends JFrame {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);
public class MyWindow2 {
JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);
public class MyWindow2 {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);
public class MyWindow2 {
JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
jf.getContentPane().add(jp);
jp.add(jtf);
jf.setVisible(true);

40. How Do I Display an Object On the Web?
Building an
Applet

41. What the Browser Expects in an Applet
public void init()
public void start()
public void stop()
public void destroy()
First (one) Time Initialization
Called when the Applet becomes visible
Called when the Applet becomes hidden
Called when Applet is unloaded

42. MyWindow2 SimpleApplet Required but not shown. import javax.swing.*;
public class SimpleApplet extends JApplet {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
public void init() {
//setSize(500, 100);
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
//setVisible(true);
public class SimpleApplet extends JApplet {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
public void init() {
//setSize(500, 100);
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
public class SimpleApplet extends JApplet {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
public void init() {
//setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
public class SimpleApplet extends JFrame {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
public class MyWindow2 extends JFrame {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
public class SimpleApplet extends JApplet {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
MyWindow2() {
setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
public class SimpleApplet extends JApplet {
//JFrame jf = new JFrame("MyWindow2");
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem jmi = new JMenuItem("Print Something Cute");
JPanel jp = new JPanel();
JTextField jtf = new JTextField("Try the File Menu");
int count = 0;
class DoIt implements ActionListener {
public void actionPerformed(ActionEvent ae) {
System.out.println("Something Cute");
jtf.setText("Count = " + ++count); }
public void init() {
setSize(500, 100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(jmb);
jmb.add(jm);
jm.add(jmi);
jmi.addActionListener(new DoIt());
getContentPane().add(jp);
add(jtf);
setVisible(true);
Required but not shown.
import javax.swing.*;
import java.awt.event.*;

43. Running The Simple Applet
Run the Applet in a JFrame
Run the Applet in the Appletviewer
Build appropriate html file
C:\Chap13>appletviewer SimpleApplet.html
Run the Applet in a Web Browser
Open html file with Browser

44. MyWindow2 public class DoMyWindow2 {
public static void main(String[] args) {
new MyWindow2(); }
import javax.swing.*;
import java.awt.event.*;
public class SimpleApplet extends JApplet { • }

45. An Applet Display Case import javax.swing.*;
public class AppletDisplayCase {
public static void main(String[] args) {
JFrame jf = new JFrame("Applet Display Case");
jf.setSize(500, 100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JApplet app = new SimpleApplet();
jf.getContentPane().add(app);
app.init();
app.start();
jf.setVisible(true); }

46. Running The Simple Applet
Run the Applet in a JFrame
Run the Applet in the Appletviewer
Build appropriate html file
C:\Chap13>appletviewer SimpleApplet.html
Run the Applet in a Web Browser
Open html file with Browser

47. VerySimpleApplet.html
<html><head><title>SimpleApplet</title></head>
<H3>Demonstrating SimpleApplet</H3>
<hr>
<APPLET
code="SimpleApplet.class"
width="500" height="100" align="baseline" codebase="." >
No Java 2 support for APPLET!!
</APPLET>
<hr></body></html>

48. <html><head><title>SimpleApplet</title></head>
<H3>Demonstrating SimpleApplet</H3>
<hr>
<OBJECT
classid="clsid:8AD9C E-11D1-B3E F499D93"
width="500" height="100" align="baseline"
codebase="
jinstall-13-win32.cab#Version=1,3,0,0">
<PARAM NAME="code" VALUE="SimpleApplet.class">
<PARAM NAME="codebase" VALUE=".">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<COMMENT>
<EMBED type=
"application/x-java-applet;version=1.3"
code="SimpleApplet.class" codebase="."
pluginspage="
plugin-install.html">
<NOEMBED>
</COMMENT>
No Java 2 support for APPLET!!
</NOEMBED>
</EMBED>
</OBJECT>
<hr></body></html>
<html><head><title>SimpleApplet</title></head>
<H3>Demonstrating SimpleApplet</H3>
<hr>
<OBJECT
classid="clsid:8AD9C E-11D1-B3E F499D93"
width="500" height="100" align="baseline"
codebase="
jinstall-13-win32.cab#Version=1,3,0,0">
<PARAM NAME="code" VALUE="SimpleApplet.class">
<PARAM NAME="codebase" VALUE=".">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<COMMENT>
<EMBED type=
"application/x-java-applet;version=1.3"
code="SimpleApplet.class" codebase="."
pluginspage="
plugin-install.html">
<NOEMBED>
</COMMENT>
No Java 2 support for APPLET!!
</NOEMBED>
</EMBED>
</OBJECT>
<hr></body></html>
SimpleApplet.html

49. <html><head><title>SimpleApplet</title></head>
<H3>Demonstrating SimpleApplet</H3>
<hr>
<OBJECT classid="clsid:8AD9C E-11D1-B3E F499D93"
width="500" height="100" align="baseline"
codebase="
jre-1_3-win.exe#Version=1,3,0,0">
<PARAM NAME="code" VALUE="SimpleApplet.class">
<PARAM NAME="codebase" VALUE=".">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<COMMENT>
<EMBED type="application/x-java-applet;version=1.3"
width="500" height="100"
align="baseline" code="SimpleApplet.class" codebase="."
pluginspage="
<NOEMBED></COMMENT>
No JDK 1.3 support for APPLET!!
</NOEMBED>
</EMBED>
</OBJECT>
<hr></body></html>
<html><head><title>SimpleApplet</title></head>
<H3>Demonstrating SimpleApplet</H3>
<hr>
<OBJECT classid="clsid:8AD9C E-11D1-B3E F499D93"
width="500" height="100" align="baseline"
codebase="
jre-1_3-win.exe#Version=1,3,0,0">
<PARAM NAME="code" VALUE="SimpleApplet.class">
<PARAM NAME="codebase" VALUE=".">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<COMMENT>
<EMBED type="application/x-java-applet;version=1.3"
width="500" height="100"
align="baseline" code="SimpleApplet.class" codebase="."
pluginspage="
<NOEMBED></COMMENT>
No JDK 1.3 support for APPLET!!
</NOEMBED>
</EMBED>
</OBJECT>
<hr></body></html>
SimpleApplet.html

50. All About Running Applets In a Web Browser

51. Running The Simple Applet
Run the Applet in a JFrame
Run the Applet in the Appletviewer
Build appropriate html file
C:\Chap13>appletviewer SimpleApplet.html
Run the Applet in a Web Browser
Open html file with Browser

52. C:\Chap13>appletviewer SimpleApplet
C:\Chap13>appletviewer SimpleApplet.html or C:\Chap13>appletviewer VerySimpleApplet.html

53. Running The Simple Applet
Run the Applet in a JFrame
Run the Applet in the Appletviewer
Build appropriate html file
C:\Chap13>appletviewer SimpleApplet.html
Run the Applet in a Web Browser
Open html file with Browser

54. Applet Limitations Can't Read or Write Local Disk Download Every Use
Should package in a .jar file
Can only communicate with host that is the source of the Applet.

55. Applet Strengths Distributes Processing Load to Client
No Installation Issues
Mistakes can't cause damage to client

56. How Do I Put Stuff Where I Want It?
About
Layout
Managers

57. Layout Managers Dynamic A Callback JDK Provides six Layout Managers
A method performs positioning
A Callback
You provide reference to class that implements an interface
JDK Provides six Layout Managers
FlowLayout
GridLayout
BorderLayout
BoxLayout
GridBagLayout
Absolute Positioning (null Layout Manager)

58. FlowLayout class FlowDemo extends JFrame {
JPanel jp = new JPanel(new FlowLayout());
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
JButton b6 = new JButton("Button Six");
FlowDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1);
jp.add(b2);
jp.add(b3);
jp.add(b4);
jp.add(b5);
jp.add(b6);
setVisible(true); }
Remember Imports:
import javax.swing.*;
import java.awt.*;
public class DoFlowDemo {
public static void main(String[] args) {
new FlowDemo(); }

59. GridLayout class GridDemo extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
JButton b6 = new JButton("Button Six");
GridDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1);
jp.add(b2);
jp.add(b3);
jp.add(b4);
jp.add(b5);
jp.add(b6);
setVisible(true); }
class GridDemo extends JFrame {
JPanel jp = new JPanel(new FlowLayout());
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
JButton b6 = new JButton("Button Six");
FlowDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1);
jp.add(b2);
jp.add(b3);
jp.add(b4);
jp.add(b5);
jp.add(b6);
setVisible(true); }
public class DoGridDemo {
public static void main(String[] args) {
new GridDemo(); }

60. GridLayout class GridDemo2 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
GridDemo2() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jsp2);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
JButton b6 = new JButton("Button Six");
GridDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1);
jp.add(b2);
jp.add(b3);
jp.add(b4);
jp.add(b5);
jp.add(b6);
setVisible(true); }
public class DoGridDemo2 {
public static void main(String[] args) {
new GridDemo2(); }

61. GridLayout class GridDemo3 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
//JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
JPanel jp2 = new JPanel(new GridLayout(3,1));
JButton jb1 = new JButton("One");
JButton jb2 = new JButton("Two");
JButton jb3 = new JButton("Three");
GridDemo3() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jp2); jp2.add(jb1); jp2.add(jb2); jp2.add(jb3);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo3 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
JPanel jp2 = new JPanel(new GridLayout(3,1));
JButton jb1 = new JButton("One");
JButton jb2 = new JButton("Two");
JButton jb3 = new JButton("Three");
GridDemo3() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jp2); jp2.add(jb1); jp2.add(jb2); jp2.add(jb3);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo3 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
JPanel jp2 = new JPanel(new GridLayout(3,1));
JButton jb1 = new JButton("One");
JButton jb2 = new JButton("Two");
GridDemo3() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jp2); jp2.add(jb1); jp2.add(jb2);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo3 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
JPanel jp2 = new JPanel(new GridLayout(3,1));
GridDemo3() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jp2);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo3 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
JPanel jp2 = new JPanel(new GridLayout(3,1));
JButton jb1 = new JButton("One");
GridDemo3() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jp2); jp2.add(jb1);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
class GridDemo2 extends JFrame {
JPanel jp = new JPanel(new GridLayout(2, 3));
JScrollPane jsp1 = new JScrollPane(new JTextArea());
JScrollPane jsp2 = new JScrollPane(new JTextArea());
JScrollPane jsp3 = new JScrollPane(new JTextArea());
JScrollPane jsp4 = new JScrollPane(new JTextArea());
JScrollPane jsp5 = new JScrollPane(new JTextArea());
JScrollPane jsp6 = new JScrollPane(new JTextArea());
GridDemo2() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(jsp1);
jp.add(jsp2);
jp.add(jsp3);
jp.add(jsp4);
jp.add(jsp5);
jp.add(jsp6);
setVisible(true); }
public class DoGridDemo3 {
public static void main(String[] args) {
new GridDemo3(); }

62. BorderLayout class BorderDemo extends JFrame {
JPanel jp = new JPanel(new BorderLayout());
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
BorderDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1, BorderLayout.CENTER);
jp.add(b2, BorderLayout.NORTH);
jp.add(b3, BorderLayout.SOUTH);
jp.add(b4, BorderLayout.EAST);
jp.add(b5, BorderLayout.WEST);
setVisible(true); }
class GridDemo extends JFrame {
JPanel jp = new JPanel(new FlowLayout());
JButton b1 = new JButton("Button One");
JButton b2 = new JButton("Button Two");
JButton b3 = new JButton("Button Three");
JButton b4 = new JButton("Button Four");
JButton b5 = new JButton("Button Five");
JButton b6 = new JButton("Button Six");
FlowDemo() {
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
jp.add(b1);
jp.add(b2);
jp.add(b3);
jp.add(b4);
jp.add(b5);
jp.add(b6);
setVisible(true); }
public class DoBorderDemo {
public static void main(String[] args) {
new BorderDemo(); }

63. What Happens When You Click?
Handling
GUI
Events

64. DisplayEvents import javax.swing.*; import java.awt.*;
import java.awt.event.*; •
DisplayEvents

65. DisplayEvents class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
setVisible(true); }
DisplayEvents

66. DoDisplayEvents public class DoDisplayEvents {
public static void main(String[] args) {
new DisplayEvents(); }

67. Run Program
> cd Events1
> java DoDisplayEvents

68. Class ML Implements MouseListener
public void mouseClicked(MouseEvent e) {
ta.append("mouseClicked - " + e.paramString() + "\n"); }
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}

69. Place ML class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
setVisible(true); }
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
setVisible(true); }
DisplayEvents
Place ML class definition here.

70. Run Program
> cd Events2
> java DoDisplayEvents

71. Class ML Implements MouseListener
public void mouseClicked(MouseEvent e) {
ta.append("mouseClicked - " + e.paramString() + "\n"); }
public void mouseEntered(MouseEvent e) {
ta.append("mouseEntered - " + e.paramString() + "\n");
public void mouseExited(MouseEvent e) {
ta.append("mouseExited - " + e.paramString() + "\n");
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
class ML implements MouseListener {
public void mouseClicked(MouseEvent e) {
ta.append("mouseClicked - " + e.paramString() + "\n"); }
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}

72. Place new ML class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
setVisible(true); }
DisplayEvents
No changes needed.
Place new ML class definition here.

73. Run Program
> cd Events3
> java DoDisplayEvents

74. Class ML Implements MouseListener
public void mouseClicked(MouseEvent e) {
ta.append("mouseClicked - " + e.paramString() + "\n"); }
public void mouseEntered(MouseEvent e) {
ta.append("mouseEntered - " + e.paramString() + "\n");
public void mouseExited(MouseEvent e) {
ta.append("mouseExited - " + e.paramString() + "\n");
public void mousePressed(MouseEvent e) {
ta.append("mousePressed - " + e.paramString() + "\n");
public void mouseReleased(MouseEvent e) {
ta.append("mouseReleased - " + e.paramString() + "\n");
class ML implements MouseListener {
public void mouseClicked(MouseEvent e) {
ta.append("mouseClicked - " + e.paramString() + "\n"); }
public void mouseEntered(MouseEvent e) {
ta.append("mouseEntered - " + e.paramString() + "\n");
public void mouseExited(MouseEvent e) {
ta.append("mouseExited - " + e.paramString() + "\n");
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}

75. Place new ML class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
setVisible(true); }
DisplayEvents
No changes needed.
Place new ML class definition here.

76. Run Program
> cd Events4
> java DoDisplayEvents

77. Class FL Implements FocusListener
public void focusGained(FocusEvent e) {
ta.append("focusGained - " + e.paramString() + "\n"); }
public void focusLost(FocusEvent e) {
ta.append("focusLost - " + e.paramString() + "\n");

78. Add new FL class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
setVisible(true); }
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
jb.addFocusListener( new FL() );
setVisible(true); }
DisplayEvents
Add new FL class definition here.

79. Run Program
> cd Events5
> java DoDisplayEvents

80. Class KL Implements KeyListener
public void keyPressed(KeyEvent e) {
ta.append("keyPressed - " + e.paramString() + "\n"); }
public void keyReleased(KeyEvent e) {
ta.append("keyReleased - " + e.paramString() + "\n");
public void keyTyped(KeyEvent e) {
ta.append("keyTyped - " + e.paramString() + "\n");

81. Add new KL class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
jb.addFocusListener( new FL() );
setVisible(true); }
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
jb.addFocusListener( new FL() );
jb.addKeyListener( new KL() );
setVisible(true); }
DisplayEvents
Add new KL class definition here.

82. Run Program
> cd Events6
> java DoDisplayEvents

83. Class MML Implements MouseMotionListener
public void mouseDragged(MouseEvent e) {
ta.append("mouseDragged - " + e.paramString() + "\n"); }
public void mouseMoved(MouseEvent e) {
ta.append("mouseMoved - " + e.paramString() + "\n");

84. Add new MML class definition here.
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
jb.addFocusListener( new FL() );
jb.addKeyListener( new KL() );
setVisible(true); }
class DisplayEvents extends JFrame {
JPanel jp = new JPanel( new BorderLayout() );
JTextArea ta = new JTextArea();
JScrollPane jsp = new JScrollPane(ta);
JButton jb = new JButton("The Button");
DisplayEvents() {
setSize(600, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(jp);
ta.setFont(new Font("SansSerif", Font.PLAIN, 18));
jb.setFont(new Font("SansSerif", Font.PLAIN, 18));
jp.add(jsp, BorderLayout.CENTER);
jp.add(jb, BorderLayout.SOUTH);
jb.setBackground(Color.yellow);
jb.addMouseListener(new ML() );
jb.addFocusListener( new FL() );
jb.addKeyListener( new KL() );
jb.addMouseMotionListener(new MML() );
setVisible(true); }
DisplayEvents
Add new MML class definition here.

85. Run Program
> cd Events7
> java DoDisplayEvents

86. Summary Creating A Window to Work With
JFrame
Applet
Positioning Object in the Window
Using Layout Managers
Laying out Layout Managers ...
Capturing and Using User Events
Mouse
Keyboard

87. A Postscript

88. End of Content