In this HackerRank Java Inheritance II problem in the java programming language you need to write the following two classes:
- A class named Arithmetic with a method named add that takes 2 integers as parameters and returns an integer denoting their sum.
- A class named Adder inherits from a superclass named Arithmetic.
Your classes should not be public.
HackrRank Java Inheritance II problem solution.
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
//Write your code here
class Arithmetic{
public int add(int a, int b){
int sum = a + b;
return sum;
}
}
class Adder extends Arithmetic{
public int callAdd(int a, int b){
return add(a, b);
}
}
public class Solution{
public static void main(String []args){
// Create a new Adder object
Adder a = new Adder();
// Print the name of the superclass on a new line
System.out.println("My superclass is: " + a.getClass().getSuperclass().getName());
// Print the result of 3 calls to Adder's `add(int,int)` method as 3 space-separated integers:
System.out.print(a.add(10,32) + " " + a.add(10,3) + " " + a.add(10,10) + "n");
}
}
Second solution
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
class Arithmetic {
Arithmetic() {}
}
class Adder extends Arithmetic {
Adder() {}
int add(int a, int b) {
return a + b;
}
}
public class Solution{
public static void main(String []args){
// Create a new Adder object
Adder a = new Adder();
// Print the name of the superclass on a new line
System.out.println("My superclass is: " + a.getClass().getSuperclass().getName());
// Print the result of 3 calls to Adder's `add(int,int)` method as 3 space-separated integers:
System.out.print(a.add(10,32) + " " + a.add(10,3) + " " + a.add(10,10) + "n");
}
}
The solution in Java 8 programming.
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
class Arithmetic {
Arithmetic() {}
}
class Adder extends Arithmetic {
Adder() {}
int add(int a, int b) {
return a + b;
}
}
public class Solution{
public static void main(String []args){
// Create a new Adder object
Adder a = new Adder();
// Print the name of the superclass on a new line
System.out.println("My superclass is: " + a.getClass().getSuperclass().getName());
// Print the result of 3 calls to Adder's `add(int,int)` method as 3 space-separated integers:
System.out.print(a.add(10,32) + " " + a.add(10,3) + " " + a.add(10,10) + "n");
}
}