关于这一节的“多线程”代码
Topic source
join()、sleep() 方法都可能会抛出 InterruptedException 异常，需要使用 try 捕捉异常
try {
t.join();
Thread.sleep(20);
} catch (InterruptedException e) {}
这样可以正常运行。
- 1
join()、sleep() 方法都可能会抛出 InterruptedException 异常，需要使用 try 捕捉异常
try {
t.join();
Thread.sleep(20);
} catch (InterruptedException e) {}
这样可以正常运行。
陈钊鸿George
文中原代码：
public class Main {
public static void main(String[] args) {
System.out.println("main start...");
Thread t = new Thread() {
public void run() {
System.out.println("thread run...");
try {
Thread.sleep(10);
} catch (InterruptedException e) {}
System.out.println("thread end.");
}
};
t.start();
try {
Thread.sleep(20);
} catch (InterruptedException e) {}
System.out.println("main end...");
}
}
然后我修改成
public class Main {
public static void main(String[] args) {
System.out.println("main start...");
Thread t = new Thread() {
public void run() {
System.out.println("thread run...");
try {
Thread.sleep(10);
} catch (InterruptedException e) {}
System.out.println("thread end.");
}
};
t.start();
t.join(); //添加了这个代码后为什么会报错unreported exception InterruptedException; must be caught or declared to be thrown
try {
Thread.sleep(20);
} catch (InterruptedException e) {}
System.out.println("main end...");
}
}