redslider.java

介绍有关java的资料 课件 相当一本书籍 里面都是很基础的知识

import java.awt.*;
import java.applet.Applet;
public class redSlider extends Applet {
	Scrollbar redslider;
	TextField redvalue;
	public void init() {
		redslider = new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,255);
		redvalue = new TextField("0",5);
		redvalue.setEditable(false);
		add(redslider);
		add(redvalue);
	}
	public boolean handleEvent(Event e) {
	  if (e.target instanceof Scrollbar) {
		redvalue.setText(
			Integer.toString(((Scrollbar)e.target).getValue()));
		return true;
	  }
	  return super.handleEvent(e);
	}
	public boolean action(Event e,Object arg) {
		System.out.println("Event" + arg);
		return true;
	}
}