关于线程的问题，代码如下，为什么只能输出一个people???

[XiaopinOo]

class People{
	private String name;
	private String sex;
	private static Boolean isEmpty=Boolean.TRUE;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public void setPeople(String name,String sex){
		synchronized (this) {
			while(!isEmpty.equals(Boolean.TRUE)){
				try {
					this.wait();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
			this.name=name;
			try {
				Thread.currentThread().sleep(1);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			this.sex=sex;
			isEmpty=Boolean.FALSE;
		}
	}
	public void getPeople(){
		synchronized (this) {
			while(!isEmpty.equals(Boolean.FALSE)){
				try {
					this.wait();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			name=this.getName();
			sex=this.getSex();
			System.out.println(this.name+"------->"+this.sex);	
			isEmpty=Boolean.TRUE;
		}
	}
}

class SetPeople implements Runnable{
	private People people;
	SetPeople(People people){
		this.people=people;
	}
	public void run() {
		for (int i = 0; i <100; i++) {
			if(i%2==0){
				people.setPeople("春哥", "男");
			}else{
				people.setPeople("凤姐", "女");
			}
		}
	}
}

class GetPeople implements Runnable{
	private People people;
	public GetPeople(People people){
		this.people=people;
	}
	public void run() {
		for (int i = 0; i < 100; i++) {
			people.getPeople();
		}
	}
}

public class text {
	public static void main(String[] args) {
		People people=new People();
		new Thread(new SetPeople(people)).start();
		new Thread(new GetPeople(people)).start();
	}

}

[九七77]

你的线程跑一次，就结束了。100次运行，都是在更改同一个对象。所以最后只能输出一个。 不知道你想问什么，你是不是想存100个people？可以声明people[100]数组，或是使用ArrayList等进行存储

[zjs91]

isEmpty.equals(Boolean.TRUE) 布尔类型的判断 用equals方法..... 看着真奇怪

[yql1986]

我将你的代码改一了下

public class text {
	public static void main(String[] args) {
		People people=new People();
		new Thread(new SetPeople(people),"SetPeople-thread").start();
		new Thread(new GetPeople(people),"GetPeople-thread").start();
		
		try {
			TimeUnit.SECONDS.sleep(5);
		} catch (InterruptedException e) { /* ignore */ }
		
		for(Map.Entry<Thread, StackTraceElement[]> entry:Thread.getAllStackTraces().entrySet()){
			Thread t=entry.getKey();
			System.out.println(t.getName()+" =>"+t.getState().toString());
		}
	}

}

======================控制台输出============================ 春哥------->男 Attach Listener =>RUNNABLE GetPeople-thread =>WAITING SetPeople-thread =>WAITING Finalizer =>WAITING Reference Handler =>WAITING main =>RUNNABLE Signal Dispatcher =>RUNNABLE 线程都处于waiting状态