public class ConcatVsAddition {
    public static void main (String[] args) {
        // Guess and explain the output!
        System.out.println(2 + 2); 
        System.out.println("2" + "2");
        System.out.println("2" + 2 + 2);
        System.out.println("2" + (2 + 2));
    }
}   
