Click0public class Click0 extends 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. |
| Fields Summary |
|---|
| Color | puckColor | | Box | puck |
| Constructors Summary |
|---|
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);
|
| Methods Summary |
|---|
| public java.lang.String | getAppletInfo()
return "Click0 by Hans Mueller. This is 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 requires JDK 1.1.";
| | public java.lang.String[][] | getParameterInfo()
return null;
| | public static void | main(java.lang.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();
|
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