logical-operators-class-vs-instance.java

public class Person {
  
  int age;
	public Person(int initial_Age) {
        if (initial_Age < 0) {
            age = 0;
            System.out.println("This person is not valid, setting age to 0.");
        } else {
            age = initial_Age;
        }
	}

	public void amIOld() { 
        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 the age of the person in here
        age++;
  }
}