public class Scope {
    public static void main(String[] args) {

        int x = 1;
        System.out.println("S1 for x: "+x);

        {
            System.out.println("S2 for x (before changing): "+x);
            x = x + 1;
            System.out.println("S2 for x (after changing):  "+x);

            int y = 3;

            {
                System.out.println("S3: "+(x + y));
            }
        }

        String y = "yes, this is legal";
        System.out.println("S1: "+y);

    }

}