example9_3.java

《Java程序设计与应用》-张仕斌-源程序 《Java程序设计与应用》-张仕斌-源程序

/*
 * Example9_3.java
 *
 * Created on 2006年10月19日, 上午11:31
 */

package example9_3;
import java.applet.Applet;
import java.awt.*; 
import java.awt.event.*;
/**
 *
 * @author  Administrator
 */
public class Example9_3 extends Applet implements Runnable{
    
    /** Initializes the applet Example9_3 */
/*    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    initComponents();
                }
            });
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }*/
    int money=1000;TextArea text1,text2;
	Thread 会计,出纳;
	public void init(){
		会计=new Thread(this); 出纳=new Thread(this);
		text1=new TextArea(16,10);text2=new TextArea(16,10);
		add(text1);add(text2);
	}
	public void start(){出纳.start();会计.start();}
	public synchronized void withdraw(int number){
		if(Thread.currentThread()==会计) {
			for(int i=1;i<=3;i++) {
				money=money+number;
   				try{Thread.sleep(1000);}
   				catch(InterruptedException e){}
   				 text1.append("\n"+money);
   			}
 		 }
 		else if(Thread.currentThread()==出纳) {
			for(int i=1;i<=2;i++) {
				money=money-number/2;
				try{Thread.sleep(1000);}
   				catch(InterruptedException e){}
    			text2.append("\n"+money);
			}
   		}
  	}
 	public void run(){
		if(Thread.currentThread()==会计||Thread.currentThread()==出纳)
  		{for(int i=1;i<=3;i++) withdraw(100); }
	
        }
    
    /** This method is called from within the init() method to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        
        setLayout(new java.awt.BorderLayout());
        
    }
    // </editor-fold>//GEN-END:initComponents
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables
    
}