Program in Java to show concept of multilevel inheritance

In this example, you’ll how in Java to show concept of multilevel inheritance.

import static java.lang.Math.*;
class A
 {
    private int num1,num2,sum;
    public void set(int x,int y)
  {
    num1=x;
    num2=y;
    sum=num1+num2;
  }
public int get1()
 {
    return(sum);
 }
  }
class B extends A
 {
    public void display()
  {
     System.out.println("sum of two numbers is"+get1());
  }
 }
class C extends B
 {
    private double sqr;
    public void sqrs()
  { 
    System.out.println("square root of sum is"+sqrt(get1()));
  }
 }
class ABCMain
{
   public static void main(String args[])
 {
   C obj1=new C();
   obj1.set(100,200);
   System.out.println("first number is 100");
   System.out.println("second number is 200");
   obj1.display();
   obj1.sqrs();
 }
}

OUTPUT

This program does a pretty good job. Here is a sample execution

first number is 100
second number is 200
sum of two numbers is 300
square root of sum is 17.3205080

Here are some more examples

• Java Program to Find all Roots of a Quadratic Equation
• Java Program to Find the Largest Among Three Numbers
• Java Program to Check Whether an Alphabet is Vowel or Consonant