How to check if Java main thread is alive

To check if the main thread is running you cannot make use of the Thread.isAlive() method : you may get the error "Cannot make a static reference to the non-static method isAlive() from the type Thread", as main is a static method thus can only access static methods.

To check if the main method thread is alive you can get the instance of the main thread by Thread.currentThread() static method.


public class ThreadAlive {

	public static void main(String[] args) {

		Thread t = Thread.currentThread();

		System.out.println("Thread : Main  Exited "
				+ Thread.currentThread().isAlive());

Recent Posts:

Code2care is an initiative to publish and share varied knowledge in programming and technical areas gathered during day-to-day learnings and development activities.

Students and Software Developers can leverage this portal to find solutions to their various queries without re-inventing the wheel by referring to our easy to understand posts. Technical posts might include Learnings, Video Tutorials, Code Snippets, How Tos, Blogs, Articles, etc.