java--Thread.UncaughtExceptionHandler

最新推荐文章于 2024-08-24 21:01:59 发布

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import org.junit.Test;

/**
 * @author John.Jiang
 * @date 2018/10/5 19:59
 *
 * main是一个线程，内部还有个线程对象
 * 多线程环境下，无法使用try_catch捕获异常，需要设置UncaughtExceptionHandler
 */
public class TestUncaughtException {


    public static void main(String[] args) {
        {
            try {
                Thread thread = new Thread(new Task());
                //thread.setUncaughtExceptionHandler(new myHandler());
                thread.start();
            } catch (Exception e) {
                System.out.println("==Exception: " + e.getMessage());
            }
        }
    }

    @Test
    public void test(){
        System.out.println(3/0);
    }
}


class Task implements Runnable {
    @Override
    public void run() {
        System.out.println(3 / 2);
        System.out.println(3 / 0);
        System.out.println(3 / 1);
    }
}

class myHandler implements Thread.UncaughtExceptionHandler {

    @Override
    public void uncaughtException(Thread t, Throwable e) {
        System.out.println("==Exception: " + e.getMessage());
        System.out.println(t.getId() + "--" + t.getPriority() + "--" + t.getName() + "--" + t.getState());
        for (StackTraceElement element : t.getStackTrace()) {
            System.out.println(element);
        }
    }

}