How to make linked stack generics?

Question

I am doing lab, I viewed a lot of Java Generics example, but I cannot understand it. My goal is achieving Linked Stack. It have 2 files: IntStack.java and IntNode.java. The part of these code is:

public class IntNode { private int element = 0; private IntNode next = null; public IntNode(final int data, final IntNode next) { this.element = data; this.next = next; } public class IntStack { private IntNode top = null; public boolean isEmpty() { return this.top == null; }

How to convert them to generics type? I know it should use <T>,and I write these code, it is correct or not?

public class Node<T> { private T element; private Node<T> next = null; public Node(final T data,final Node next) { this.element = data; this.next = next; } }

Node next shouldn't use raw type, thus should be parametrized with T: Node<T> next . — LuCio
– LuCio, Commented Nov 28, 2018 at 7:54

Eran · Accepted Answer · 2018-11-28 07:54:02Z

You are close. The Node parameter of the Node constructor should also be parameterized:

public class Node<T> { private T element; private Node<T> next = null; public Node(final T data,final Node<T> next) { this.element = data; this.next = next; } }

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