29/01/25
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Q)What are the types of inheritance?
       1)Single Inheritance
       2)Multiple Inheritance
=>Single inheritance is that form of inheritance in which,a child class inherits only
one parent class.
=>There are 2 spcial cases of single inheritance.
       1)Hierarchical
       2)Multi level
=>Multiple inheritance is that form of inheritance in which, a child class inherits
from more than on parent class.
   Note:- Java doesn't support Multiple inheritance.

DIAGRAM

=>Hierarchical inheritance is a special case of single inheritance in which, a parent class
has multiple sub classes.

=>Multi-level inheritance is that form single inheritance in which,  a sub class acts as a parent
class for another sub class.

Q)Write a Java program that implements hierarchical inheritance.
class Person{
	int age;
	String name;
    void storePersonData(int age,String name){
           this.age=age;
		   this.name=name;
	}
	void displayPersonData(){
		  System.out.println("NAME:"+name);
		  System.out.println("AGE:"+age);
	}
}
class Employee extends Person{
	int empno;
	float salary;
	void storeEmployeeData(int eno,float sal, int age,String name)	{
        storePersonData(age,name);//inherited method
		empno=eno;
		salary=sal;
	}
	void displayEmployeeData(){
		displayPersonData();
		System.out.println("EMPNO:"+empno);
		System.out.println("SALARY Rs."+salary);		   
	}
}
class Student extends Person{
	int rollno;
	int marks;
	void storeStudentData(int rollno,int marks,int age,String name){
        storePersonData(age,name);
		this.rollno=rollno;
		this.marks=marks;
	}
	void displayStudentData(){
		displayPersonData();
		System.out.println("ROLLNO:"+rollno);
		System.out.println("MARKS:"+marks);	
	}
}
class  HierarchicalInheritanceApplication{
	public static void main(String[] args) {
		Employee e=new Employee();
		e.storeEmployeeData(10001,50000,28,"Rama");
		e.displayEmployeeData();
	}
}