Method Thread.stop() does not nesessary stops a thread but only causes
an exception to be thrown on this thread. This exception can be intercepted
and the thread can cantinue executionm

However, in all jdk1.1.* releases, Thread.stop() immediately marks the object
thread as not alive. Thread.stop(Throwable) does it too.

Testcase:

import java.io.PrintStream;

class DeadOrAliveE extends Error {}

public class DeadOrAlive {
  static PrintStream out=System.out;
  
  public static void main(String args[]) {

Thread me=Thread.currentThread();

try {
// me.stop(new DeadOrAliveE());
me.stop();
// } catch (DeadOrAliveE e) {
} catch (ThreadDeath e) {
if (me.isAlive()) {
out.println("OK");
} else {
out.println("isAlive()==false for running thread");
}
return;
} catch (Throwable e) {
out.println("wrong Throwable:"+e);
}

out.println("no Throwable thrown after stop");
  }

}

% javac DeadOrAlive.java
% java -fullversion
java full version "JDK1.1.8M"
% java DeadOrAlive
isAlive()==false for running thread