What is the best way to write java class inheritance?

Question

Java

Good day.

class Parent {}
....
Parent p = new Parent() {
  public void Hello() {}
}

I understand correctly that a new anonymous class is being created here? If so, does it differ technically (memory, time, etc.) from the usual one?

class Parent {}
class Child extends Parent {
  public void Hello() {}
}

Answer 1

No, it's not different. In both cases, the compiler will save completely identical bytecode to class files. The only difference is that in the first case, the compiler will generate a class name of the form External_class_name$Internal_class_number .