Adding a Node in a doubly-linked list [closed]

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I am working on some code were I need to add a Node into a doubly-linked list. This is the code I have so far:

Node tempNext = cursor开发者_StackOverflow社区.getNext();
temp = new Node(item, null, cursor, tempNext);
tempNext.setPrev(temp);

Where cursor is the Node that is right before where the new added Node should go.

How do I set the other nodes to correctly maintain the state of the doubly-linked list?

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Writing meaningful variable names will always help you, never use names like temp*:

protected void insertNodeAfter(Node currentNode, Node newNode) {
    Node displacedNode = currentNode.getNext();
    currentNode.setNext(newNode);
    newNode.setNext(displacedNode)
    displacedNode.setPrev(newNode);
    newNode.setPrev(currentNode);
}

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Seems like all you need to add is

cursor.setNext(temp);

Do you have a specific question?

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public void addItemBefore( int info )
{
    previousItem = new ListItem( previousItem, info, this );
}