?? eventtracertest.java
字號:
/**
@version 1.12 2004-05-10
@author Cay Horstmann
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class EventTracerTest
{
public static void main(String[] args)
{
JFrame frame = new EventTracerFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class EventTracerFrame extends JFrame
{
public EventTracerFrame()
{
setTitle("EventTracerTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
// add a slider and a button
add(new JSlider(), BorderLayout.NORTH);
add(new JButton("Test"), BorderLayout.SOUTH);
// trap all events of components inside the frame
EventTracer tracer = new EventTracer();
tracer.add(this);
}
public static final int DEFAULT_WIDTH = 400;
public static final int DEFAULT_HEIGHT = 400;
}
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