下面我们将通过一个示例场景来演示如何比较两个List是否一致。假设我们有两个List,分别是list1和list2,我们需要比较它们是否一致。 List<Integer>list1=Arrays.asList(1,2,3,4,5);List<Integer>list2=Arrays.asList(1,2,3,4,5);booleanresult1=compareLists(list1,list2);/
+int getAge()+boolean equals(Object o)ListComparisonUtil+static boolean compareLists(List list1, List list2)+static void main(String[] args) 4. 序列图 使用序列图来展示compareLists方法的调用过程,可以更清晰地理解它的执行流程。 PersonList2List1ListComparisonUtilPersonList2List1ListComparisonUtilloop...
因此,如果使用不可变列表,请考虑将它们包装在ArrayList实例中。 static boolean compareListsIgnoringOrder(ArrayList list1, ArrayList list2) { if (list1 == null || list2 == null) return false; if (list1.size() != list2.size()) return false; for (Object o : list1) { list2.remove(o);...
Note that the difference between two lists is equal to a third list which contains either additional elements or missing elements. 1. Comparing Two Lists for Equality 1.1. Sort then Compare The following Java program tests if two given lists are equal. To test equality, we need to sort both...
此接口对实现它的每个类的对象强加一个默认排序。这种排序被称为类的自然排序,类的compareTo方法被称为其自然比较方法。 Lists (and arrays) of objects that implement this interface can be sorted automatically byCollections.sort(andArrays.sort).
2. WithSets / contains()Check: If the data in our lists are unique i.e. there isn’t a duplication, we can simply createTreeSetsfrom the given lists and then compare them usingequals(): public<TextendsComparable<T>>booleanisEquals(List<T>list1, List<T>list2){ ...
toList()); return resultList; } /** * 通过遍历两个List中按id属性相等的归结到resultList中 * @param oneList 源list 1 * @param twoList 源list 2 * @param equalKeyName 相等的map键值 */ public static List<Map<Object, Object>> compareListHitData(List<Map<Object, Object>> oneList, List...
在实际项目中可能会遇到不相关的表查询结果拼装成一个并按时间倒序排序,然而这样的需求往往用sql不能方便的实现,就需要分别查询出来用List返回,但是返回时需要排序。这时就需要用到List的sort 通过实现Collections.sort的compare接口实现,可排序数字、时间,顺序、倒序 ...
compare(); } private static ArrayList<String> lists = new ArrayList<String>(); private static LinkedList<String> linkedLists = new LinkedList<String>(); private static HashSet<String> hashSets = new HashSet<String>(); private static HashMap<String, String> hashMaps = new HashMap<String,...
All elements in this list must be mutually comparable using the specified comparator (that is, c.compare(e1, e2) must not throw a ClassCastException for any elements e1 and e2 in the list). If the specified comparator is null then all elements in this list must implement the Comparable ...