how to find out who create a thread in java?

Question

in tomcat,if a webapp did stop a none daemon thread,tomcat can not be shutdown by shutdown.sh

for example:

public class demo implements ServletContex         


        

Answer 1

If you have control of the class you can catch the stack trace when it is created:

public class Test extends TimerTask {
  final StackTraceElement[] callerStack;

  public Test () {
    callerStack = Thread.currentThread().getStackTrace();
  }

  @Override
  public void run() {
    System.out.println("AAAA");
    System.out.println("Creator: "+Arrays.asList(callerStack));
  }

  @Override
  public String toString () {
    return "Test created by "+Arrays.asList(callerStack);
  }
}