The java.lang.Thread.currentThread() method returns the reference to the currently executing thread object.

The currentThread() method tells us which is the current thread executing.

Example of Thread.currentThread()

Program(Save as Main.java)

class threadCurrent implements Runnable
{ 
    public void run()
    {
        System.out.println(Thread.currentThread()+" is running!");
    }
}
class Main
{
    public static void main(String args[])
    { 
        threadCurrent obj = new threadCurrent();
        Thread t1 = new Thread(obj);
        t1.setName("MyThread");
        t1.start();
    } 
}

Output

Thread[MyThread,5,main] is running!

In the above program, we have created a thread(t1) and named it as "MyThread", so when we call Thread.currentThread() method we see that MyThread is currently executing.