awteventtest.java

来自「samplecode 111 for J2SE project」· Java 代码 · 共 61 行

package soe;

import java.awt.Frame;
import java.awt.event.ActionListener;
import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class AWTEventTest extends Frame implements ActionListener {
/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
Button button;
Label label;
public AWTEventTest() {
super("EventTest of TTT");

//setSize(200, 200);
setLayout(new FlowLayout());
// Create button
button = new Button("Click here");
add(button);
// Create label
label = new Label("");
label.setAlignment(Label.CENTER);
add(label);
// Register action listener
button.addActionListener(this);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// set adequate window size
pack();
// show the window
//show(); //java1.4

setVisible(true); //java1.5
}
/**
* This method is called when the action event happens
*
*/
public void actionPerformed(ActionEvent e) {
// Event
if (e.getSource().equals(button)) {
label.setText("Hello, Do you wanna sleep? ");
pack();
}
}
/**
* @param args
*/
public static void main(String[] args) {
new AWTEventTest();
}
}