Question

I’m learning Java and as I know only abstract classes and interfaces cannot be instantiated. However documentation of java.lang.System says that it cannot be instantiated which is neither abstract nor an interface.

I haven’t got any explanation of it. Can somebody please explain this ?

Moreover Can somebody create such classes ?

Answer 1

It’s simple: It have no public Constructor.

You can do that yourself:

final public class Abc {
   private Abc() {}
}