CODEWITHSUNDEEP
javalinked-liststacktostring
bruhHelp
bruhHelp

Reputation: 9

Return all values of a dynamic stack linkedlist in a toString method

I'm trying to figure out how to output all the versions of the node "latest" using a toString method, but I'm confused as to how to make the while loop work correctly in this case. I was wondering if there is a method to go about doing so.

Here's the toString() method:

    public String toString() {

        String output = "key: " + key ;
        Node<VersionedObject> currNode = latest;
        
        while (latest != null){
            output += latest+ "\n\t";
            latest.setNext(latest);
        } // This isn't particularly working


        //return "key: " + key +"\n\t" +latest + "\n\t" + latest.getNext(); // placeholder but it's getting closer. This one is INSANELY specific

        return output;
    }

, Here's the method that creates the list:

    public StackOfVersionedObjects(String key, final Object object) {
        this.key = key;
        VersionedObject vrObject = new VersionedObject(object);
        latest = new Node<VersionedObject>(vrObject);
    }

, And here's my node class:

    public class Node<T> {

    private T    data;
    private Node next;

    public Node() {
        data = null;
        next = null;
    }

    public Node(T data) {
        this.data = data;
        next      = null;
    }

    public T getData() {
        return data;
    }

    public Node<T> getNext() {
        return next;
    }

    public void setData(T data) {
        this.data = data;
    }

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

    @Override
    public String toString() {
        return data.toString();
    }
}

Upvotes: 0

Views: 49

Answers (1)

0xh3xa
0xh3xa

Reputation: 4859

Change the latest to currentNode and loop like this

@Override
public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("key: " + key);
    Node<VersionedObject> currNode = latest;
  
    while (currNode != null){
        builder.append(currNode + "\n\t");
        currNode = currNode.getNext();
    }

    return builder.toString();
}

Upvotes: 2

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