第一个节点上的链表无限循环

Question

Printing the value of the node during the loop i discovered it infinite loops always on the first node when, for example, searching for a node which is not in the list(if its on the list it works). Im using a node to point the first element as well as the last one.

This is my search method

public LNode search(int data){
    LNode currNode = head;
    while(data != currNode.value){
        if(currNode.next == null)
            return null;
        else{
            currNode = currNode.next;
            System.out.println("currnode " + currNode.value);
        }
    }
    return currNode;
}

the insert method which always inserts elements at the beginning

public void insert( LNode aNode ) { 
    if(head==null){
        head = aNode;
        tail = aNode;
        size++;
    }
    aNode.next = head;
    head = aNode;
    size++;
}

It is like the first entered element has a next node which is not set to null, but i dont know why it isnt null

Answer 1

I think in

if(head==null){
    head = aNode;
    tail = aNode;
    size++;
}

is a return missing. you make a loop with head and increase size by 2 with one insert.