Java开发问题

How do define my own element class for use with Set(如何定义我自己的元素类以与 Set 一起使用)
LinkedHashSet remove duplicates object(LinkedHashSet 删除重复对象)
HashSet contains() method(HashSet contains() 方法)
Does Common Lisp have a something like java#39;s Set Interface/implementing classes?(Common Lisp 是否有类似 java 的 Set Interface/implementing classes 的东西?)
Java partially ordered Collectionlt;Egt;(Java 部分有序集合lt;Egt;)
quot;add to setquot; returns a boolean in java - what about python?(“添加到集合在java中返回一个布尔值-python呢?)
Get all possible partitions of a set(获取集合的所有可能分区)
how to find the length of a set?(如何找到集合的长度?)
How to add an Array into Set properly?(如何正确地将数组添加到 Set 中?)
How to get the difference between two maps Java?(如何获得两个地图Java之间的差异?)
What is the equivalent of LinkedHashSet (Java) in C#?(C# 中的 LinkedHashSet (Java) 等价物是什么?)
Cannot instantiate the type Set(无法实例化类型 Set)