***********************************
* ActionExample1.java Inherits from CloseableFrame.java and uses SetSizeButton.java.
* ActionExample2.java Inherits from CloseableFrame.java.
**********************************************************
ActionExample1.java
*******************
import java.awt.*;
public class ActionExample1 extends CloseableFrame {
public static void main(String[] args) {
new ActionExample1();
}
public ActionExample1() {
super("Handling Events in Component");
setLayout(new FlowLayout());
setFont(new Font("Serif", Font.BOLD, 18));
add(new SetSizeButton(300, 200));
add(new SetSizeButton(400, 300));
add(new SetSizeButton(500, 400));
setSize(400, 300);
setVisible(true);
}
}
********************
CloseableFrame.java
********************
import java.awt.*;
import java.awt.event.*;
/** A Frame that you can actually quit. Used as the starting
* point for most Java 1.1 graphical applications.
***********************
public class CloseableFrame extends Frame {
public CloseableFrame(String title) {
super(title);
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
}
/** Since we are doing something permanent, we need
* to call super.processWindowEvent first.
*/
public void processWindowEvent(WindowEvent event) {
super.processWindowEvent(event); // Handle listeners.
if (event.getID() == WindowEvent.WINDOW_CLOSING) {
// If the frame is used in an applet, use dispose().
System.exit(0);
}
}
}
**********************
SetSizeButton.java
**********************
import java.awt.*;
import java.awt.event.*;
///////////////////////
public class SetSizeButton extends Button
implements ActionListener {
private int width, height;
public SetSizeButton(int width, int height) {
super("Resize to " + width + "x" + height);
this.width = width;
this.height = height;
addActionListener(this);
}
public void actionPerformed(ActionEvent event) {
getParent().setSize(width, height);
getParent().invalidate();
getParent().validate();
}
}
***********************
ActionExample2.java
***********************
import java.awt.*;
import java.awt.event.*;
/***********/
public class ActionExample2 extends CloseableFrame
implements ActionListener {
public static void main(String[] args) {
new ActionExample2();
}
private Button button1, button2, button3;
public ActionExample2() {
super("Handling Events in Other Object");
setLayout(new FlowLayout());
setFont(new Font("Serif", Font.BOLD, 18));
button1 = new Button("Resize to 300x200");
button2 = new Button("Resize to 400x300");
button3 = new Button("Resize to 500x400");
button1.addActionListener(this);
button2.addActionListener(this);
button3.addActionListener(this);
add(button1);
add(button2);
add(button3);
setSize(400, 300);
setVisible(true);
}
public void actionPerformed(ActionEvent event) {
if (event.getSource() == button1) {
updateLayout(300, 200);
} else if (event.getSource() == button2) {
updateLayout(400, 300);
} else if (event.getSource() == button3) {
updateLayout(500, 400);
}
}
private void updateLayout(int width, int height) {
setSize(width, height);
invalidate();
validate();
}
}
****************/>
CloseableFrame.java.
****************/>< import java.awt.*;
import java.awt.event.*;
/** A Frame that you can actually quit. Used as the starting
* point for most Java 1.1 graphical applications.
*
*********************
public class CloseableFrame extends Frame {
public CloseableFrame(String title) {
super(title);
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
}
/** Since we are doing something permanent, we need
* to call super.processWindowEvent first.
*/
public void processWindowEvent(WindowEvent event) {
super.processWindowEvent(event); // Handle listeners.
if (event.getID() == WindowEvent.WINDOW_CLOSING) {
// If the frame is used in an applet, use dispose().
System.exit(0);
}
}
}
***************
Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10332
Categories:Programming Code Examples, Java/J2EE/J2ME, AWT Components
Tags:Java/J2EE/J2MEAWT Components
Post Data:2017-01-02 16:04:35
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