Answer day4

[jmmedel]

public class Person { private int age;

public Person(int initialAge) {
      // Add some more code to run some checks on initialAge
    this.age=initialAge;
}

public void amIOld() {
      // Write code determining if this person's age is old and print the correct statement:
    if(this.age<0)
      { System.out.println("Age is not valid, setting age to 0.");
       this.age=0;
       amIOld();
      }
    else if(this.age<13)
        System.out.println("You are young.");
    else if(this.age<18)
        System.out.println("You are a teenager.");
    else if(this.age>=18)
        System.out.println("You are old.");
}

public void yearPasses() {
      // Increment this person's age.
    this.age+=1;
}

[kanahaiya]

Thanks for pointing out :) Fixes #2 issue by updating my solution.

[kanahaiya]

Fixes #2 issue.