Java线程礼让，死锁

package com.threadpriority.ljb;/*** 线程礼让* 1.可以使用 yield()方法将一个线程的操作暂时让给其它线程**/
public class ThreadComity {public static void main(String[] args) {MyThread01 my1 &＃61; new MyThread01();MyThread01 my2 &＃61; new MyThread01();Thread t1 &＃61; new Thread(my1,"线程1");Thread t2 &＃61; new Thread(my2,"线程2");t1.start();t2.start();}
}
class MyThread01 implements Runnable{&＃64;Overridepublic void run() {for (int i &＃61; 0; i < 5; i&＃43;&＃43;) {System.out.println(Thread.currentThread().getName() &＃43; "->" &＃43; i);if (i &＃61;&＃61; 3) {System.out.println(Thread.currentThread().getName() &＃43; "礼让");Thread.currentThread().yield();//礼让}}}}

死锁

package com.threadpriority.ljb;
/*** 死锁**/
public class ThreadDeadlock {public static void main(String[] args) throws InterruptedException {TestThreadDeadlock my &＃61; new TestThreadDeadlock();my.name &＃61; "张三";new Thread(my).start();Thread.sleep(100);my.name &＃61; "李四";new Thread(my).start();}
}


package com.threadpriority.ljb;public class TestThreadDeadlock implements Runnable{Object bowl &＃61; new Object();Object spoon &＃61; new Object();String name;&＃64;Overridepublic void run() {if(name.equals("张三")) {synchronized (bowl) {System.out.println("张三拿到bowl&＃xff0c;去拿spoon");try {Thread.sleep(300);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}synchronized (spoon) {System.out.println("张三拿到spoon,|去拿bowl");}}}else if(name.equals("李四")) {synchronized (spoon) {System.out.println("李四拿到spoon&＃xff0c;去拿bowl");try {Thread.sleep(300);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}synchronized (bowl) {System.out.println("李四拿到bowl,|去拿spoon");}}}}}