中断后线程的对象变量仍然可用

Question

i have this thread

public class ThreadA extends Thread {

private final String lala = "lala";

@Override
public void run() {
    Scanner scanner = new Scanner(System.in);
    String value = scanner.next();
    while (!value.equals("stop") && !isInterrupted()) {
        value = scanner.next();
    }
    interrupt();
    System.out.println("exit");
}

public String getMe() {
    return lala;
}

}

and I wonder why I always can access to the method getMe() even when the Thread is already interrupted.

Why is that so? And is that always possible, even after days or will the Garbage Collector somewhen delete that object?

Answer 1

interrupt() just sets a special flag. In you case it doesn't do anything special.

I wonder why I always can access to the method getMe() even when the Thread is already interrupted.

To do this you must have a reference to the ThreadA object and while you hold that reference you will always be able to call it.

is that always possible, even after days or will the Garbage Collector somewhen delete that object

Yes, when the thread is not running, it is just a plain object like any other and it will exist as long as you hold a reference to it.