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Programming Languages Suite
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ProgLangD.iso
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VCAFE.3.0A
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Sample.bin
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Click0.java
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1998-09-15
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import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/**
* Here's a simple example of an anonymous nested class that implements
* the MouseMotionListener interface. It does so by extending
* MouseMotionAdapter, a utility class that provides no-op implementations
* for all of the methods in MouseMotionListener. In this case we're
* just handling mouseMoved() events by moving the "puck" along the
* bottom edge of the applet.
*
* Note that the listener implementation can refer to fields defined
* in enclosing scopes, e.g. the Box field called puck, directly.
*
* This applet runs correctly in HotJava, it requires JDK 1.1.
*/
public class Click0 extends Applet
{
Color puckColor = new Color(200, 0, 10);
Box puck = new Box(puckColor);
public Click0()
{
MouseMotionListener movePuck = new MouseMotionAdapter() {
public void mouseMoved(MouseEvent e)
{
int x = e.getX();
int y = getSize().height - puck.getSize().height;
puck.setLocation(x, y);
}
};
add(puck);
addMouseMotionListener(movePuck);
}
public static void main(String[] args)
{
WindowListener l = new WindowAdapter()
{
public void windowClosing(WindowEvent e) {System.exit(0);}
};
Frame f = new Frame("Click");
f.addWindowListener(l);
f.add(new Click0());
f.setSize(400, 400);
f.show();
}
}