A doubt on overloading

Question

it is said that functions with same name and signature can't be overloaded only by different return types.
but when i coded like as below,
class sub{
// declarations
sub(){
// initializations
int sub(){
return 100;
the above code did'nt rise errors, and works simply as some function in the class. when invoked using the object it returns the integer 100.
could anybody , please explain me the concept of java behind this.

Answer 1

its not a question whether constructors are method or
not. the question is overloading.No, the issue, in essence, is exactly that constructors are not methods. In the OP, we have a base constructor and a subclass method with the same name.
The subclass method is not an "overload with different return type" (the actual question) because:
- the base ctor is not a method
=> it is not inherited
=> therefore, it cannot be overloaded in the subclass.
Even within the base class, you cannot "overload a constructor by a method" because again, a constructor is not a method. You are allowed to give your class a method with a constructor name (although it is discouraged) but it doesn't qualify as an overload.
seocndly we can call constructors as special type of
functions but i think it is hardly used.Care to demonstrate that?