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To create a linked list in Java, a class or data structure that contains two fields is usually used:

  • The value (data) of the node — for example, an object or a primitive type.
  • A reference to the next node (next).

The data type for the node is often implemented as an inner class or a separate class with fields, for example:

class Node {
    int data;      // or another data type
    Node next; // reference to the next element

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

This way, a linked list is created using a custom class (Node), where each element contains data and a reference to the next element in the list.