Following example demonstrates how to check a thread has stop or not by checking with isAlive() method.
public class Main {
public static void main(String[] argv)
throws Exception {
Thread thread = new MyThread();
thread.start();
if (thread.isAlive()) {
System.out.println("Thread has not finished");
}
else {
System.out.println("Finished");
}
long delayMillis = 5000;
thread.join(delayMillis);
if (thread.isAlive()) {
System.out.println("thread has not finished");
}
else {
System.out.println("Finished");
}
thread.join();
}
}
class MyThread extends Thread {
boolean stop = false;
public void run() {
while (true) {
if (stop) {
return;
}
}
}
}
Result:
The above code sample will produce the following result.