testjslider.java

有大量的java的实例

import java.awt.*;
import javax.swing.event.*;
import javax.swing.*;  

public class TestJSlider extends JApplet implements ChangeListener
{
  JSlider jslh,jslv;
  JLabel jl;
  double hValue=0.0,vValue=0.0;
  public void init()
  {
	Container c = getContentPane();
	jslh = new JSlider(JSlider.HORIZONTAL,0,255,0);
	jslv = new JSlider(JSlider.VERTICAL,200,1000,800);
	jslh.setMajorTickSpacing(30);
	jslh.setPaintLabels(true);
	jslv.setMajorTickSpacing(200);
	jslv.setPaintLabels(true);
	c.add(jslh,BorderLayout.SOUTH);
	c.add(jslv,BorderLayout.WEST);
	jl = new JLabel("横向滚动条指向：   0.0；纵向滚动条指向：   800.0");
	c.add(jl,BorderLayout.CENTER);
	jslh.addChangeListener(this);
	jslv.addChangeListener(this);
  }
  public void stateChanged(ChangeEvent e)
  {
 	if(e.getSource()==jslh)
 		hValue = ((JSlider)e.getSource()).getValue();
	else if(e.getSource()==jslv)
		vValue = ((JSlider)e.getSource()).getValue();
	jl.setText("横向滚动条指向："+hValue+"；纵向滚动条指向："+vValue);
  }
}