Chap 7


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import java.awt.*; import java.awt.event.*; public class EventDemo1 { public static void main(String args[]) { Frame fr = new Frame("Event Demo"); Button bn1 = new Button("Exit"); fr.setLayout(new FlowLayout()); bn1.addActionListener(new ActionHandler()); fr.add(bn1); fr.setSize(200,200); fr.setVisible(true); } } ------------------------------------------------------public class ActionHandler implements ActionListener { public void actionPerformed(ActionEvent ev) { System.exit(0); } }




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import java.awt.*;
import java.awt.event.*;
public class EventDemo2 { private Frame fr;
private TextField tf; public EventDemo2() {
fr = new Frame("Event Demo"); tf = new TextField(15);
fr.setLayout(new FlowLayout());
fr.add(tf); fr.setFont(new Font("TimesRoman",Font.BOLD,16));
fr.addMouseMotionListener(new MouseHandler()); fr.setSize(200,200);
fr.setVisible(true); }
public class MouseHandler implements MouseMotionListener public void mouseDragged(MouseEvent ev) {
tf.setText("X="+ev.getX()+" Y="+ev.getY());
} public void mouseMoved(MouseEvent ev) { }
} public static void main(String args[]) {
EventDemo2 obj = new EventDemo2(); }
}






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WindowEvent
       

import java.awt.*; import java.awt.event.*;  public class EventDemo3 implements WindowListener{ public static void main(String args[]) { EventDemo3 obj = new EventDemo3(); obj.init(); } public void init() { Frame fr = new Frame("Event Demo"); fr.addWindowListener(this); fr.setSize(200,200); fr.setVisible(true); } public void windowClosing(WindowEvent ev) { System.exit(0); } public void windowOpened(WindowEvent ev) {} public void windowClosed(WindowEvent ev) {} public void windowIconified(WindowEvent ev) {} public void windowDeiconified(WindowEvent ev) {} public void windowActivated(WindowEvent ev) {} public void windowDeactivated(WindowEvent ev) {} }


  

 
  









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!:(<1(0"%.8 942W##,-LE5,6(M: %B
vQ… ("'  3!, #'& #%B 6 +%$"(,+J]64D31'(E&/6I"A5 import java.awt.*; import java.awt.event.*; public class EventDemo4 implements MouseMotionListener, WindowListener { private Frame fr; private TextField tf; public EventDemo4() { fr = new Frame("Event Demo"); tf = new TextField(15); fr.setLayout(new FlowLayout()); fr.add(tf); fr.setFont(new Font("TimesRoman",Font.BOLD,16)); fr.addMouseMotionListener(this); fr.addWindowListener(this); fr.setSize(200,200);
fr.setVisible(true);
} public static void main(String args[]) {
EventDemo4 obj = new EventDemo4();
} public void mouseDragged(MouseEvent ev) {
tf.setText("X="+ev.getX()+" Y="+ev.getY());
} public void mouseMoved(MouseEvent ev) { }
public void windowClosing(WindowEvent ev) {
System.exit(0); }
public void windowOpened(WindowEvent ev) { } public void windowClosed(WindowEvent ev) { } public void windowIconified(WindowEvent ev) { } public void windowDeiconified(WindowEvent ev) { } public void windowActivated(WindowEvent ev) { } public void windowDeactivated(WindowEvent ev) { } }


  

 
  










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MouseAdapter MouseListener

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ComponentAdapter ComponentListener

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ContainerAdapter ContainerListener

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KeyAdapter KeyListener

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WindowAdapter import java.awt.*; import java.awt.event.*;  public class EventDemo5 { public static void main(String args[]) { Frame fr = new Frame("Event Demo"); fr.addWindowListener(new WindowHandler()); fr.setSize(200,200); fr.setVisible(true); } } public class WindowHandler extends WindowAdapter { public void windowClosing(WindowEvent ev) { System.exit(0); } }

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,7=7];=2K import java.awt.*; import java.awt.event.*; public class EventDemo6 { public static void main(String args[]) { Frame fr = new Frame("Event Demo"); fr.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent ev) { System.exit(0); } }); fr.setSize(200,200); fr.setVisible(true); } }


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implements
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implements /A"D/(EJ&:(>
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