doprotected2.java

java教程第七章事例

import javax.microedition.midlet.*;

public class DoProtected2 extends MIDlet{

	int data = 0;
	SetThread setThread;
	GetThread getThread;
	Object object;

	public DoProtected2(){
		setThread = new SetThread();
		getThread = new GetThread();
		object = new Object();
	}	

	public void startApp(){
		getThread.start();
		setThread.start();
	}

	public void pauseApp(){
	}

	public void destroyApp(boolean unconditional){
	}
	
	class SetThread extends Thread{
	
		public void run(){
			while(data != 10){
				synchronized(object){
					data++;
					System.out.println("Set data = "+data);	
				}
			}
			System.out.println("SetThread Exit!");
		}	
	}
	class GetThread extends Thread{
	
		public void run(){
			while(data != 10){
				synchronized(object){
					System.out.println("1st Get data = "+data);	
					for(int i=0;i<1000;i++){}
					System.out.println("2nd Get data = "+data);
				}	
			}
			System.out.println("GetThread Exit!");
		}	
	}
}