线程可以通过调用线程对象的 interrupt() 方法来发送中断信号，从而中断线程。这意味着线程的中断是由其他线程调用 interrupt() 方法引起的。
Thread 类提供了三个中断方法：
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- void interrupt() - 中断线程。
- static boolean interrupted() - 测试当前线程是否被中断。
- boolean isInterrupted() - 测试线程是否被中断。
示例
public class ThreadInterruptTest {
public static void main(String[] args) {
System.out.println("Thread main started");
final Task task = new Task();
final Thread thread = new Thread(task);
thread.start();
thread.interrupt(); // calling interrupt() method
System.out.println("Main Thread finished");
}
}
class Task implements Runnable {
@Override
public void run() {
for (int i = 0; i < 5; i++) {
System.out.println("[" + Thread.currentThread().getName() + "] Message " + i);
if(Thread.interrupted()) {
System.out.println("This thread was interruped by someone calling this Thread.interrupt()");
System.out.println("Cancelling task running in thread " + Thread.currentThread().getName());
System.out.println("After Thread.interrupted() call, JVM reset the interrupted value to: " + Thread.interrupted());
break;
}
}
}
}输出
Thread main started Main Thread finished [Thread-0] Message 0 This thread was interruped by someone calling this Thread.interrupt() Cancelling task running in thread Thread-0 After Thread.interrupted() call, JVM reset the interrupted value to: false
