Java.lang.Thread.dumpStack() Method

Description

The java.lang.Thread.dumpStack() method prints a stack trace of the current thread to the standard error stream. This method is used only for debugging.

Declaration

Following is the declaration for java.lang.Thread.dumpStack() method

public static void dumpStack()

Parameters

• NA

Return Value

This method does not return any value.

Exception

• NA

Example

The following example shows the usage of java.lang.Thread.dumpStack() method.

package com.tutorialspoint;

import java.lang.*;

public class ThreadDemo {

   public static void main(String[] args) {

     Thread t = Thread.currentThread();
     t.setName("Admin Thread");
     // set thread priority to 1
     t.setPriority(1);
     
     // prints the current thread
     System.out.println("Thread = " + t);
    
     int count = Thread.activeCount();
     System.out.println("currently active threads = " + count);
    
     /* prints a stack trace of the current thread to the standard
     error stream, used for debugging */
     Thread.dumpStack();
   }
}

Let us compile and run the above program, this will produce the following result:

Thread = Thread[Admin Thread,1,main]
currently active threads = 1
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1266)
at CheckAccess.main(CheckAccess.java:15)