sbdemo.java

这是我们上java课时自己编的几个测试小程序

/**
 * @(#)SBDemo.java
 *
 *
 * @author 
 * @version 1.00 2007/11/4
 */

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class SBDemo extends Applet implements AdjustmentListener,MouseMotionListener
{	String msg="";
	Scrollbar vertSB,horzSB;
	public void init()
	{	int width=Integer.parseInt(getParameter("width"));
		int height=Integer.parseInt(getParameter("height"));
		vertSB=new Scrollbar(Scrollbar.VERTICAL,0,1,0,height);
		horzSB=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,width);
		add(vertSB);	add(horzSB);
		vertSB.addAdjustmentListener(this);
		horzSB.addAdjustmentListener(this);
		addMouseMotionListener(this);
	}
	public void adjustmentValueChanged(AdjustmentEvent ae)
{	repaint();	}
public void mouseDragged(MouseEvent me)
{	int x=me.getX();
	int y=me.getY();
	vertSB.setValue(y);
	horzSB.setValue(x);
	repaint();	
}
public void mouseMoved(MouseEvent me){   }
public void paint(Graphics g)
{	msg="Vertical:"+vertSB.getValue();
	msg+=",Horizontal:"+horzSB.getValue();
	g.drawString(msg,6,160);
	g.drawString("********",horzSB.getValue(),vertSB.getValue());	
}
}