Java多线程（八） synchronized 抛出异常锁自动解除
2024-09-30 20:10:17
当一个线程执行的代码出现异常时，其所持有的锁会自动释放
public class MyObject {
private int i = 1;
synchronized public void methodA() throws InterruptedException {
System.out.println("begin methodA threadName=" + Thread.currentThread().getName());
if(i==1){
throw new InterruptedException();
}
System.out.println("end methodA ");
}
synchronized public void methodB() throws InterruptedException {
System.out.println("begin methodB threadName=" + Thread.currentThread().getName());
System.out.println(" end methodB");
}
}
ThreadA 和 ThreadB
public class ThreadA extends Thread {
private MyObject myObject;
public ThreadA(MyObject myObject){
this.myObject =myObject;
}
public void run(){
try {
myObject.methodA();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public class ThreadB extends Thread {
private MyObject myObject;
public ThreadB(MyObject myObject){
this.myObject =myObject;
}
public void run(){
try {
myObject.methodB();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Run
public class Run {
public static void main(String[] args) {
MyObject object = new MyObject();
ThreadA threadA = new ThreadA(object);
threadA.setName("A");
threadA.start();
ThreadB threadB = new ThreadB(object);
threadB.setName("B");
threadB.start();
}
}
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