incompatible types : java.lang.Object cannot be converted to T

Question

Here is my code:

package datastructures;

import java.util.Iterator;

public class Stack{
    private class Node{
        T data;
        N         


        

Answer 1

When you declare Node as

private class Node

you're declaring a generic type with another T as the T in the enclosing type. You're hiding T. So, in short, it's as if you were declaring it as

private class Node

Just use

private class Node