BlueJ Lab — OOP Principles Summary

Java Code

public class Main {
    public static void main(String[] args) {
        System.out.println("1. Encapsulation");
        System.out.println("2. Inheritance");
        System.out.println("3. Polymorphism");
        System.out.println("4. Abstraction");
    }
}

Program Input (optional) Output