Question

I’m not sure about one thing. There are two things in object oriented programming.

1. Constructor

2. Method

Which one of these can be overloaded and which one overridden?

Thanks!

Answer 1

both can be overloaded.
overloading means having two or more methods or constructors with exactly same name but different signatures. some thing like :

public myClass(String a){}
public myClass(Double d){}

or for methods :

public void aMethod(String s){}
publis int aMethod(Double d){
return 0;
}

edited :
bebin, overriding usually comes with inheritance , when the super class implements a method but the subclass needs to implement that method in other way like :
in super class:

public int doSomething(){
  return a+2;
}

but in subclass :

@override
public in doSomething(){
return a*2;
}

and about constructor overriding the following line are from CollinD and i am quoting it :
“Constructors are not normal methods and they cannot be “overridden”. Saying that a constructor can be overridden would imply that a superclass constructor would be visible and could be called to create an instance of a subclass. This isn’t true… a subclass doesn’t have any constructors by default (except a no-arg constructor if the class it extends has one). It has to explicitly declare any other constructors, and those constructors belong to it and not to its superclass, even if they take the same parameters that the superclass constructors take.

The stuff you mention about default no arg constructors is just an aspect of how constructors work and has nothing to do with overriding.”