Rava2 - Java Source Interpreter

public class Main {
    public static void main(String[] args) {
        Person alice = new Person("Alice", 30);
        Person bob = new Person("Bob", 25);

System.out.println(alice.introduce());
        System.out.println(bob.introduce());

alice.haveBirthday();
        System.out.println("After birthday: " + alice.introduce());

Student student = new Student("Charlie", 20, "Computer Science");
        System.out.println(student.introduce());
    }
}

class Person {
    private String name;
    private int age;

Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

String getName() {
        return name;
    }

int getAge() {
        return age;
    }

void haveBirthday() {
        age++;
    }

String introduce() {
        return "Hi, I'm " + name + " and I'm " + age + " years old.";
    }
}

class Student extends Person {
    private String major;

Student(String name, int age, String major) {
        super(name, age);
        this.major = major;
    }

String introduce() {
        return "Hi, I'm " + getName() + ", " + getAge() + " years old, studying " + major + ".";
    }
}

ready