So lösen Sie Deadlock-Probleme in Java

/**
 * 模拟死锁类
 * */
public class ImitateDeadLock {
	public static void main(String[] args) {
		final Object a=new Object();
		final Object b=new Object();
		//线程 threadA 获取对象 a 的锁之后，休眠10秒， 尝试获取对象 b 的锁
		Thread threadA=new Thread(new Runnable() {
			@Override
			public void run() {
				synchronized (a) {
						System.out.println("threadA 获取到对象 a 的锁");
						try {
							Thread.sleep(10000);
							synchronized (b) {
								System.out.println("threadA 获取到对象 b 的锁");
							}
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
						
					
				}
			}
		});
		//线程 threadB 获取对象 b 的锁之后，休眠10秒， 尝试获取对象 a 的锁
		Thread threadB=new Thread(new Runnable() {
			@Override
			public void run() {
				synchronized (b) {
						System.out.println("threadB 获取到对象 b 的锁");
						try {
							Thread.sleep(10000);
							synchronized (a) {
								System.out.println("threadB 获取到对象 a 的锁");
							}
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
				}
			}
		});
		
		threadA.start();
		
		threadB.start();
	}
}

threadA 获取到对象 a 的锁
threadB 获取到对象 b 的锁
无限等待........

C:\Users\31415> jps
1256 ImitateDeadLock
9240 Jps
7548 org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar

C:\Users\31415>jstack 1256
Java stack information for the threads listed above:
===================================================
"Thread-1":
        at ImitateDeadLock$2.run(ImitateDeadLock.java:37)
        - waiting to lock <0x048b15a8> (a java.lang.Object)
        - locked <0x048b15b0> (a java.lang.Object)
        at java.lang.Thread.run(Thread.java:745)
"Thread-0":
        at ImitateDeadLock$1.run(ImitateDeadLock.java:17)
        - waiting to lock <0x048b15b0> (a java.lang.Object)
        - locked <0x048b15a8> (a java.lang.Object)
        at java.lang.Thread.run(Thread.java:745)

Found 1 deadlock.