Day 4: Class vs. Instance Hackerrank Solution java

 Day 4: Class vs. Instance Hackerrank Solution java

Do Check My Video For Explnation:

Sample Input

4
-1
10
16
18

Sample Output

Age is not valid, setting age to 0.
You are young.
You are young.

You are young.
You are a teenager.

You are a teenager.
You are old.

You are old.
You are old.

Code:

import java.io.*;
import java.util.*;
public class Person {
    private int age;    
  
    public Person(int initialAge) {
        // Add some more code to run some checks on initialAge
          if(initialAge<0){
              age = 0;
              System.out.println("Age is not valid, setting age to 0.");
          }else{
              age = initialAge;
          }
          
    }
    public void amIOld() {
        // Write code determining if this person's age is old and print the correct statement:
          if(age < 13){
              System.out.println("You are young.");
          }else if(age>=13 && age<18){
              System.out.println("You are a teenager.");
          }else{
              System.out.println("You are old.");
          }
    }
    public void yearPasses() {
        // Increment this person's age.
          age = age + 1;
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int T = sc.nextInt();
        for (int i = 0; i < T; i++) {
            int age = sc.nextInt();
            Person p = new Person(age);
            p.amIOld();
            for (int j = 0; j < 3; j++) {
                p.yearPasses();
            }
            p.amIOld();
            System.out.println();
        }
        sc.close();
    }
}