Passing different type than parameter type

Question

If I would have a variable a declared by A a and a method m with void m(B b). Is there any way that calling m(a)

Answer 1

This can be possible when A is a subclass of B or we can say A extends B, this is known as inheritance in programming language, in this A will be a child of the class B and inherit all its properties

you can check it from the link below

https://www.tutorialspoint.com/java/java_inheritance.htm