JAVA programming - Abstract class :     abstract class Concept{
	public void Mymethod()
	{
		System.out.println("this is concrete method");
	}
	abstract public void junk();
    }
    class king extends Concept{

	public void junk()
	{
		System.out.println("this is abstract method");
	}

    public static void main(String[] args) {
	
    king n = new king();
    n.junk();
    }


    }


Please check the error in this!!!
While compiling this, i was hit with an following issue : 

Error: Main method not found in class Concept, please define the main method as:
   public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application