I am looking at a Java program in which a text file containing integers is read into a simplified LinkedList, and then all the possible subsets of the list are considered. At the bottom of my code below, there is an OR operator, denoted by ||, in the middle of a return statement. How does the compiler decide whether to express the left side or the right side of the || operator? I debugged the program and stepped through it line by line, and I noticed that both sides are expressed, recursively. How can both parts of an or statement be expressed? I'm new to this, so I find it confusing. Any help would be appreciated.

```
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class Target {
/*--------------LINKED LIST------------------*/
    private Node head;
    private Node tail;

    public void add(int obj) {
        if (head == null) {
           head = new Node(obj);
           tail = head;
        } else {
           tail.next = new Node(obj);
           tail = tail.next;
        }
    }
    class Node {
        public Node next;
        public int item;

        public Node(int item) {
            this.item = item;
        }
    }
/*--------------LINKED LIST------------------*/

    public Target() {
        head = null;
    }

    public static void main(String args[]) throws FileNotFoundException {
        Scanner fileIn = new Scanner(new File("in.txt"));
        Target list = new Target();

        while (fileIn.hasNext()) {
            list.add(fileIn.nextInt()); //Read the file into the linkedlist.
        }
        fileIn.close();

        System.out.println(list.recursiveSolution(list, 0));
    }

    public boolean recursiveSolution(Target list, int target) {
        return subsetSumXOR(list.head, 0, 0, target);
    }

    private boolean subsetSumXOR(Node node, long sumOne, long sumTwo, int target) {
        if (node == null) {
            return (sumOne ^ sumTwo) == target;  //base case, when node is null we've reached the end of the list.
        }

        return subsetSumXOR(node.next, sumOne + node.item, sumTwo, target) || subsetSumXOR(node.next, sumOne, sumTwo + node.item, target);
    }

}

```