Introduction

• currentThread() method is the static method which returns a reference to the Thread object representing the currently executing thread (the code that called this method).
• Use :-
  • Identify which thread is running (name, id, priority) for logging/debugging.
  • Access or modify the current thread (e.g. Thread.currentThread().setName("...")).
  • Check or clear interrupt status (Thread.currentThread().isInterrupted() / interrupt() on self).
  • Internally used by ThreadLocal and other concurrency utilities to attach per-thread state.
• Syntax :-
  • public static native Thread currentThread()
• Program :-

  class MyTask extends Thread
  {
      @Override
      public void run()
      {
          // Identify current thread details
          Thread t = Thread.currentThread();
  
          System.out.println("Id : "+t.getId());
  
          System.out.println("Name 1 : "+t.getName());
  
          // Modify the current thread
          t.setName("Deepak-Thread");
  
          System.out.println("Name 2 : "+t.getName());
      }
  }
  
  public class CurrentThreadDemo
  {
      public static void main(String[] args)
      {
          MyTask t1 = new MyTask();
          t1.start();
      }
  }

  Output:

  Id : 22
  Name 1 : Thread-0
  Name 2 : Deepak-Thread