Hierarchical Inheritance in Java

Hierarchical Inheritance: This type of Inheritance is a bit complex than the other two types of Inheritance.In this type of Inheritance one class is inherited by many sub classes.It can  also be called as one-to-many relationship.
                                                In hierarchical inheritance,the method of accessing methods of base class and its own class is also different,but that's not a big problem,its difficult for beginners,i too had spent a lot time on understanding this type of Inheritance,so I had decided to present the hierarchical inheritance in the most simple way,below is the diagram and the code for hierarchical inheritance.

WAP to implement Hierarchical Inheritance in Java:


class base{
void display1(){
System.out.println("This is base class method");
}
}
class derived1 extends base                                                     //Derived1 class inherits base class
{
void display2(){
System.out.println("This is derived1 class method");
}
}
class derived2 extends base                                                   //Derived2 class inherits base class
{
void display3(){
System.out.println("This is derived2 class method");
}
}
class Tasic
{
public static void main(String args[])
{
derived1 d1=new derived1();                                                //Derived1 class object declared
d1.display2();                                                                        //Calling its own member
d1.display1();                                                                        //Calling base class member

derived2 d2=new derived2();                                                 //Derived1 class object declared
d2.display3();                                                                        //Calling its own member
d2.display1();                                                                        //Calling base class member
}
}


The output is: