testslider.java

有大量的java的实例

import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class TestSlider extends Applet implements AdjustmentListener
{
  Scrollbar mySlider;
  TextField sliderValue;
  public void init()
  {
    setLayout(new BorderLayout());
    mySlider = new Scrollbar(Scrollbar.HORIZONTAL,0,100,0,Integer.MAX_VALUE); 
    mySlider.setUnitIncrement(1);
    mySlider.setBlockIncrement(50);   //没起作用
    add("South",mySlider);
    mySlider.addAdjustmentListener(this);
    sliderValue = new TextField(30);
    add("Center",sliderValue);
  }
  public void adjustmentValueChanged(AdjustmentEvent e)
  {
    int value;
    if(e.getAdjustable() == mySlider)
    {
      value = e.getValue();
      sliderValue.setText(new Integer((int)value).toString());
      sliderValue.setBackground(new Color(value));
    }
  }
}