可以使用containsAll方法来判断两个List的值是否一致。 publicbooleancompareLists(List<Object>list1,List<Object>list2){returnlist1.containsAll(list2)&&list2.containsAll(list1);} 1. 2. 3. 该方法首先调用list1的containsAll方法,并传入list2作为参数,判断list1是否包含list2中的所有元素。同时,还调用list2的...
+String getName()+int getAge()+boolean equals(Object o)+int hashCode()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。 PersonList2List1ListComparisonUtilPe...
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 <T extends Comparable<T>> boolean isEquals(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...
int[] numbers = {1, 2, 3, 4, 5}; IntStream stream = Arrays.stream(numbers); 1. 2. 从文件创建流 可以使用Files.lines()方法来从文件中创建一个流。例如: try (Stream<String> lines = Files.lines(Paths.get("data.txt"), Charset.defaultCharset())) { ...
();Collections.sort(ageList,newComparator<Actor>(){publicintcompare(Actor c1,Actor c2){returnInteger.compare(c1.getId(),c2.getId());}});//存入string列表for(Actor d:ageList){lowActoresName.add(d.getName());}//输出for(Actor lowCaloricActor:ageList){System.out.println(lowCaloricActor);}...
List<String>fruits=Arrays.asList('Orange',null,'Banana');Collections.sort(fruits,Comparator.nullsFirst(String::compareTo));System.out.println(fruits);// Output:// [null, Banana, Orange] Java Copy Sorting Custom Objects Without ImplementingComparable ...