java 时间追踪器（EventTracer）

[liyuan02]

下面是corejava中的源代码。

import java.awt.*;

import javax.swing.*;

/**
* @version 1.13 2007-06-12
* @author Cay Horstmann
*/
public class EventTracerTest
{
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
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;
}

EventTracer 这个类在api中咋查不到？ 谢谢！

[龙四]

自定义的吧