While singly-linked lists have many uses, they also present some restrictions. For one thing, singly-linked lists restrict node traversal to a single direction: you can’t traverse a singly-linked list ...

In this example, Employee is a self-referential class because its next field has type Employee. This field is an example of a link field because it can store a reference to another object of its class ...

@Data public class 商品リスト{ private List<商品> list; public 商品リスト(List<商品> 商品リスト){ this.list = 商品リスト; } public 商品 get ...