Strings - General Questions

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        String s = "Programming";
        System.out.println(s.substring(3, 7) + " " + s.indexOf('g') + " " + s.charAt(0));
    }
}

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        String s = "Mississippi";
        System.out.println(s.indexOf("ss") + " " + s.lastIndexOf("ss"));
    }
}