src/main/java/thread/DeadLock.java · ifranxx/JavaDemo

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JavaDemo

src

main

java

thread

DeadLock.java

DeadLock.java 1.84 KB

package thread;

public class DeadLock
{
 public static void main(String[] args)
 {
 DeadLockThread d = new DeadLockThread();
 new Thread(d).start();
 d.init();
 }

static class A
 {
 public synchronized void foo(B b)
 {
 System.out.println(Thread.currentThread().getName() + "进入A类的foo()方法");
 try
 {
 Thread.sleep(500);
 System.out.println(Thread.currentThread().getName() + "企图调用b对象的last()方法");
 b.last();
 } catch (InterruptedException e)
 {
 e.printStackTrace();
 }
 }

public synchronized void last()
 {
 System.out.println(Thread.currentThread().getName() + "调用A类的last()方法");
 }
 }

static class B
 {
 public synchronized void foo(A a)
 {
 System.out.println(Thread.currentThread().getName() + "进入B类的foo()方法");
 try
 {
 Thread.sleep(500);
 System.out.println(Thread.currentThread().getName() + "企图调用a对象的last()方法");
 a.last();
 } catch (InterruptedException e)
 {
 e.printStackTrace();
 }
 }

public synchronized void last()
 {
 System.out.println(Thread.currentThread().getName() + "调用B类的last()方法");
 }
 }

static class DeadLockThread implements Runnable
 {
 A a = new A();
 B b = new B();

public void init()
 {
 Thread.currentThread().setName("主线程");
 a.foo(b);
 }

@Override
 public void run()
 {
 Thread.currentThread().setName("子线程");
 b.foo(a);
 }
 }
}

Copy Edit Raw Blame History

yutf99 authored 2019年11月18日 16:38 +08:00 . init

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74

package thread;

public class DeadLock
{
 public static void main(String[] args)
 {
 DeadLockThread d = new DeadLockThread();
 new Thread(d).start();
 d.init();
 }

 static class A
 {
 public synchronized void foo(B b)
 {
 System.out.println(Thread.currentThread().getName() + "进入A类的foo()方法");
 try
 {
 Thread.sleep(500);
 System.out.println(Thread.currentThread().getName() + "企图调用b对象的last()方法");
 b.last();
 } catch (InterruptedException e)
 {
 e.printStackTrace();
 }
 }

 public synchronized void last()
 {
 System.out.println(Thread.currentThread().getName() + "调用A类的last()方法");
 }
 }

 static class B
 {
 public synchronized void foo(A a)
 {
 System.out.println(Thread.currentThread().getName() + "进入B类的foo()方法");
 try
 {
 Thread.sleep(500);
 System.out.println(Thread.currentThread().getName() + "企图调用a对象的last()方法");
 a.last();
 } catch (InterruptedException e)
 {
 e.printStackTrace();
 }
 }

 public synchronized void last()
 {
 System.out.println(Thread.currentThread().getName() + "调用B类的last()方法");
 }
 }

 static class DeadLockThread implements Runnable
 {
 A a = new A();
 B b = new B();

 public void init()
 {
 Thread.currentThread().setName("主线程");
 a.foo(b);
 }

 @Override
 public void run()
 {
 Thread.currentThread().setName("子线程");
 b.foo(a);
 }
 }
}