Trace: two objects (Java)

Line 1: class Jar {1class Jar {
Line 2, indented 1 level: int sweets;2    int sweets;
Line 3: }3}
Line 4: 4
Line 5: public class Main {5public class Main {
Line 6, indented 1 level: public static void main(String[] args) {6    public static void main(String[] args) {
Line 7, indented 2 levels: Jar a = new Jar();7        Jar a = new Jar();
Line 8, indented 2 levels: a.sweets = 4;8        a.sweets = 4;
Line 9, indented 2 levels: Jar b = new Jar();9        Jar b = new Jar();
Line 10, indented 2 levels: b.sweets = 9;10        b.sweets = 9;
Line 11, indented 2 levels: a.sweets = a.sweets + 3;11        a.sweets = a.sweets + 3;
Line 12, indented 2 levels: b.sweets = b.sweets - a.sweets;12        b.sweets = b.sweets - a.sweets;
Line 13, indented 2 levels: int x = a.sweets;13        int x = a.sweets;
Line 14, indented 2 levels: a.sweets = 0;14        a.sweets = 0;
Line 15, indented 2 levels: int y = b.sweets + a.sweets;15        int y = b.sweets + a.sweets;
Line 16, indented 2 levels: System.out.println(x + y);16        System.out.println(x + y);
Line 17, indented 1 level: }17    }
Line 18: }18}

Fill in one row each time a line changes x or y, or prints something. The table already has the right number of rows. In each row, write only what that line changes; you can leave the other cells empty or copy their values down. Write values the way Java shows them: 3 and 3.0 are different, and text goes in quotes. In the output column, write exactly what appears on screen, with no quotes around it.