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Why is the answer 10 and 0 (respectively - two different answers, one is 10 and...

Why is the answer 10 and 0 (respectively - two different answers, one is 10 and the second one is 0)? I don't know how to trace this. Please don't be too complex in your explanation.

Consider the following class

public class Node {
    private int item;
    private Node next;
   
    public Node() {
        this(0);
    }
    public Node(int item) {
        this(item, null);
    }
    public Node(int item, Node next) {
        this.item = item;
        this.next = next;
    }
    public int getItem() {
        return item;
    }
    public void setItem(int item) {
        this.item = item;
    }
    public Node getNext() {
        return next;
    }
    public void setNext(Node next) {
        this.next = next;
    }
}

What printed on the console after the following lines are exectued (ignore the new line characters):

Node node1 = new Node(10);
Node node2 = new Node();

System.out.println("node1 -> item = " + node1.getItem());
System.out.println("node2 -> item = " + node2.getItem());

Answer:

node1 -> item = [1] (answer here is 10)

node2 -> item = [2] (answer here is 0)
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Homework Answers

Answer #1

Answer:

Node node1 = new Node(10);
This calls the constructor public Node(int item).
which assigns 10 to item and null to next

Node node2 = new Node();
This calls the default constructor public Node().
which assigns 0 to item and null to next

so, node1->item is 10
and node2->item is 0
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