Question: Implement a nested class DoubleNode for building doubly-linked lists, where each node contains a reference to the item preceding it and the item following it

Implement a nested class DoubleNode for building doubly-linked lists, where each node contains a reference to the item preceding it and the item following it in the list ( null if there is no such item). Then implement static methods for the following tasks: insert at the beginning, insert at the end, remove from the beginning, remove from the end, insert before a given node, insert after a given node, and remove a given node
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