线程同步wait notify小例子

<strong>线程同步小例子：开启两个线程实现拿鸡蛋 放鸡蛋交叉进行</strong>

</pre><pre code_snippet_id="574008" snippet_file_name="blog_20150107_1_8603573" name="code" class="java">public class Dofunction {
	private int num;

	public  synchronized void getEgg(){
		while(num==0){
			try {
				wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		num--;
		System.out.println("拿鸡蛋");
		notify();
	}

	public synchronized void setEgg(){
		while(num!=0){
			try {
				wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		num++;
		System.out.println("放鸡蛋");
		notify();
	}
}

public class TestTread {

	public static void main(String[] args) {
		Dofunction set =new Dofunction();
		Thread t1 = new GetEgeThread(set);
		Thread t2 = new Thread(new SetEggThread(set));
		t1.start();
		t2.start();
	}

}

/**
 * 对于同一对象而言才存在同步的问题，所以有一个接受对象的构造方法
 *
 */
class SetEggThread implements Runnable {
	private Dofunction set;

	public SetEggThread(Dofunction set) {
		this.set = set;
	}
	@Override
	public void run() {
		for (int i = 0; i < 20; i++) {
			set.setEgg();
		}
	}
}

class GetEgeThread extends Thread {
	private Dofunction set;

	public GetEgeThread(Dofunction set) {
		this.set = set;
	}
	@Override
	public void run() {
		for (int i = 0; i < 20; i++) {
			set.getEgg();
		}
	}
}

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