如何在java中使用节点编写toString方法

public class Node {
    private int data;
    private Node next;

    public Node(int data) {
        this.data = data;
    }

    public int getData() {
        return data;
    }

    public Node getNext() {
        return next;
    }

    public void setNext(Node next) {
        this.next = next;
    }

    @Override
    public String toString() {
        return "Node{" +
                "data=" + data +
                '}';
    }
}

public class Main {
    public static void main(String[] args) {
        Node node1 = new Node(1);
        Node node2 = new Node(2);
        Node node3 = new Node(3);

        node1.setNext(node2);
        node2.setNext(node3);

        System.out.println(node1.toString());
    }
}

Node{data=1}