Why We Use Non Modified Constructor in Enum in Java

Question

I have seen a java code where I see a non-modified constructor in an enum. Can anyone tell me why it is like that?

public enum myEnum{

  myEnum()
   {
       System.out.println("Hello World");
   }
}

Answer 1

Assuming you mean why there is no access modifier for the constructor, that's because

In an enum declaration, a constructor declaration with no access modifiers is private.

and

It is a compile-time error if a constructor declaration in an enum declaration is public or protected (§6.6).

It's redundant to specify private, so some people don't.