fancontrolpanel.java

使用netbean开发的电风扇小applet

package myFan;

import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollBar;

public class FanControlPanel extends JPanel implements ActionListener,AdjustmentListener{

	JPanel jButtonPanel;
	JButton jButtonStart,jButtonStop,jButtonReverse;
	JScrollBar jScrollBar;
	Fan fan=new Fan();
    boolean flag=true;
//    Thread thread=new Thread(new Fan());

	public FanControlPanel(){
        setLayout(new BorderLayout());
		jButtonPanel=new JPanel(new GridLayout(3,1));		
		jScrollBar=new JScrollBar(JScrollBar.VERTICAL);
        jScrollBar.setValue(20);
		jScrollBar.addAdjustmentListener(this);
        jButtonStart=new JButton("start");
        jButtonStart.addActionListener(this);
		jButtonStop=new JButton("stop");
        jButtonStop.addActionListener(this);
		jButtonReverse=new JButton("reverse");
        jButtonReverse.addActionListener(this);
		jButtonPanel.add(jButtonStart);
		jButtonPanel.add(jButtonStop);
		jButtonPanel.add(jButtonReverse);
		this.add(fan,BorderLayout.CENTER);
		this.add(jButtonPanel,BorderLayout.WEST);
		this.add(jScrollBar,BorderLayout.EAST);
	}

     public void actionPerformed(ActionEvent e) {
        if(e.getSource()==jButtonStart){
            if(flag){
                fan.start();
                flag=false;
            }else{
               fan.resume();
            }
        }else if(e.getSource()==jButtonStop){
            fan.stop();
        }else if(e.getSource()==jButtonReverse){
            fan.reverse();
        }
    }

    public void adjustmentValueChanged(AdjustmentEvent e) {
        System.out.println(e.getValue());
        fan.changeSpeed(e.getValue());
    }

}