CODEWITHSUNDEEP
javalistnodes
CodingIsHardMan
CodingIsHardMan

Reputation: 59

Connecting two nodes in Java

So for a project I have to create two nodes, which I have done, and then create a separate class with a constructor that takes the two nodes as arguments and then connects/links them. Here is my class creating a node.

package Linear;

public class StringNode {

public String data;

public StringNode next;

public StringNode(String data, StringNode next) {
    this.data = data;
    this.next = next;

}

public String toString() {
    return data + "";

}
public static void main(String[] args) {


StringNode newNode = new StringNode("Everest", null);
System.out.println(newNode);

StringNode newNode2 = new StringNode("Kilimanjaro", null);
System.out.println(newNode2);


    }
}

So the two nodes created here are called Everest and Kilomanjaro, I need to connect these nodes using a constructor but I am having problems doing so. I have something like this, but it's throwing up errors in the arguments when I try to call it (Edgelist(StringNode, StringNode) is undefined).

package Linear;

public class EdgeList {



public StringNode insert(StringNode firstNode, StringNode secondNode) {
        secondNode.next = insert(firstNode, secondNode.next);



    return secondNode;


    }
}

Thanks!

Upvotes: 1

Views: 1925

Answers (1)

SomeFire
SomeFire

Reputation: 180

Edgelist(StringNode, StringNode)

It looks like constructor, which you are not defined in the class. So if there is no constructor - it couldn't be called.

You can create setter (or use variables while they are public) and call setters for both nodes after initializing.

StringNode newNode = new StringNode("Everest", null);
StringNode newNode2 = new StringNode("Kilimanjaro", null);

newNode.setNext(newNode2);
newNode2.setNext(newNode);

Or, if you really need new class for this, you can do something like that:

public class EdgeList {
    public EdgeList(StringNode firstNode, StringNode secondNode) {
        secondNode.next = firstNode;
        firstNode.next = secondNode;
    }
}

Upvotes: 2

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