Inheritance.java

import com.someOrg.zoo.Dog;
import com.someOrg.Human.Child;
import com.someOrg.zoo.Cat;
 
public class Inheritance {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.printInfo();
 
        dog.sound();
 
        Cat cat = new Cat();
        cat.printInfo();
 
        cat.sound();
 
        Child child = new Child();
        child.setName("Bachha");
        child.setAge(12);
 
        System.out.println(child.getName());
        System.out.println(child.getAge());
 
        child.childSpecificMethod();
    }
}
 
// Heirarchal Inheritance
// Grandparent ---> Parent ---> Child
 
// When making a Child object the order in which constructors execute:
 
// Child constructor requires things from parent constructor which in turn requires things from
// Grandparent constructor
 
// GrandParent constructor called
// Parent constructor called
// Child constructor called
 
// Parallel Heirarchal Inheritance
// Animal +-----> Dog
//        +-----> Cat
 
// Java does NOT allow multiple inheritance
 
// Class A +----|
// Class B +----+----> Class X (inherits A,B,C)
// Class C +----|
 
// This is NOT allowed in Java as this introduces ambiguity. For example each of A,B,C might
// define a method called foo(), then which of A.foo(), B.foo(), C.foo() would be called
// when X.foo() is called?
 
// For such problems Java provides Interfaces