import java.util.Iterator;
import java.util.Map;

public class ThreadTest1 {
    public ThreadTest1() {
        Thread thread = new Thread(new Task());
        thread.start();

        System.out.println("All Thread Stack Traces.");
        Map<Thread, StackTraceElement[]> traces = Thread.getAllStackTraces();
	Iterator it = traces.entrySet().iterator();
	while (it.hasNext()) {
	    System.out.println(it.next());
	}

        System.out.println("\nCurrent Thread Stack Trace.");
	StackTraceElement[] elements = traces.get(Thread.currentThread());
	for (int i = 0; i < elements.length; i++) {
	    System.out.println(elements[i]);
	}
    }

    class Task implements Runnable {
        public void run() {
            try {
                Thread.sleep(1000L);
            } catch (InterruptedException ex) {
		System.out.println("Interrupted Exception.");
	    }

            System.out.println("\nTask Thread Stack Trace.");
	    StackTraceElement[] elements = Thread.currentThread().getStackTrace();
	    for (int i = 0; i < elements.length; i++) {
		System.out.println(elements[i]);
	    }
        }
    }

    public static void main(String[] args) {
        new ThreadTest1();
    }
}