Answer in Java, please explain answer as well.

1) What is Output of following Java program? public class Stuff 1 private static final int n = 2; private String str; private int num; public Stuff (String s, int num) { this. num = num; str = s; } + num + public void do something (double d) { num = (int) ( d * num); } public double changeSomething (String s) ! str = s; return n* num; ) public String toString() {return str + has public class TestStuff ! public static void main(String[] args) { Stuff s = new Stuff ("in", 5); System.out.println(s); double doubleValue = 2.5; s.doSomething (doubleValue); System.out.println(s); s = new Stuff ("more", 3); String str = "word"; System.out.println(s.change Something (str)); System.out.println(s); }