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ÕâÀïÉæ¼°µ½ÈçºÎÅжÏÈý¸öÈ˶¼È¡ÍêË®¡£Èç¹ûÓÃÆÕͨµÄ¾²Ì¬³ÉÔ±£¬ÊƱػáÒªÓÃÎÞÏÞÑ­»·À´µÈ´ý¡£¸üºÃµÄ°ì·¨ÊÇÓà wait-notify »úÖÆ¡£Ç°Á½¸öѧÉúÈ¡ÍêË®ºó¶¼ wait£¬×îºóÒ»¸öѧÉúÈ¡ÍêË®ºó notify£¬ÕâÑù¾ÍÄÜÒ»ÆðÀ뿪ÁË¡£ÏÂÃæÊÇ´úÂëʾÀý£º
/**
* Èý¸öѧÉúÅŶÓÈ¡Ë®£¬È¡ÍêºóÒ»ÆðÀ뿪
*
* @author yiding.he
*/
public class SyncDemo_FetchingWater {

private static final ValueLock water = new ValueLock();

public static void main(String[] args) {
String[] student_names = {"¼×", "ÒÒ", "±û"};

for (String student_name : student_names) {
new Student(student_name).start();
}
}

// ѧÉú
private static class Student extends Thread {

private String name;

private Student(String name) {
this.name = name;
}

@Override
public void run() {
try {
synchronized (water) {
Thread.sleep(1000);

System.out.println("ѧÉú" + name + "È¡ÍêÁËË®¡£");
water.value++;

if (water.value == 3) {
System.out.println("Èý¸öÈ˶¼È¡ÍêÁËË®¡£");
water.notifyAll(); // Ö»ÒªÖ´ÐÐÁËÕâ¸ö£¬Ñ§ÉúÃǶ¼»áÀ뿪¡£
} else {
water.wait(); // ͬʱÊÍ·ÅÁËËø£¬ÏÂÒ»¸öÏ߳̽øÈë
}
}
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("ѧÉú" + name + "À뿪ÁË¡£");
}
}

// ´øÖµµÄËø
private static class ValueLock {

public int value;
}
}
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