What is the purpose of using dumpStack() method in Java?

The dumpStack() method is a static method of the Thread class and can be used to print or display the stack trace of the current thread to System.err. The purpose of the dumpStack() method is basically for debugging and internally, the method calls the printStackTrace() method of the Throwable class. This method does not throw any exception.

Grammar

public static void dumpStack()

Examples

public class ThreadDumpStackTest {
   public static void main(String args[]) {
      Thread t = Thread.currentThread();
      t.setName("ThreadDumpStackTest");
      t.setPriority(1);
      System.out.println("Current Thread: " + t);
      int count = Thread.activeCount();
      System.out.println("Active threads: " + count);
      Thread threads[] = new Thread[count];
      Thread.enumerate(threads);
      for (int i = 0; i < count; i++) {
         System.out.println(i + ": " + threads[i]);
      }
      Thread.dumpStack();
   }
}

Output

Current Thread: Thread[ThreadDumpStackTest,1,main]
Active threads: 1
0: Thread[ThreadDumpStackTest,1,main]
java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Thread.java:1336)
        at ThreadDumpStackTest.main(ThreadDumpStackTest.java:14)

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