在上面的示例中,我们首先创建了两个List对象list1和list2,并向它们添加了相同的元素。然后,我们定义了一个compareLists方法,用来比较这两个List是否具有相同的值。最后,在main方法中调用compareLists方法,并输出比较结果。 类图 CompareLists+boolean compareLists(List list1, List list2)Lis
下面是一个使用Set数据结构判断两个List是否存在重复项的示例代码: importjava.util.ArrayList;importjava.util.HashSet;importjava.util.List;importjava.util.Set;publicclassCompareTwoLists{publicstaticbooleanhasDuplicate(List<Integer>list1,List<Integer>list2){Set<Integer>set1=newHashSet<>(list1);Set<Intege...
We often use Java Lists as a general-purpose collection of ordered elements. We often need to compare two Java Lists for equality or to find their common or differentiating elements. Consider we have two Lists of Student instances, one that contains Math toppers and the other contains Sports t...
Learn tocompare two ArrayListin Java to find if they contain equal elements. If both lists are unequal, we will find thedifference between the lists. We will also learn to find common as well as different items in each list. Note that the difference between two lists is equal to a third...
Lists in Java are ordered by nature. So,two lists are considered to be equal if they contain the exact same elements in the same order.In this tutorial, we’ll see how to compare two Lists for equality in Java. We’ll also cover ways in which we can just compare the elements in two...
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/*** 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<Map<Object, Object>> twoList, Object equal...
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...
This quick tutorial demonstrated ways of testing if two Java Lists are equal. Two List implementations are considered equal when they have the same elements in the same order. We studied how to assert that the two Lists are the same or are equal using JUnit, TestNG, AssertJ, and plain Jav...
(Two elements e1 and e2 are equal if (e1==null ? e2==null : e1.equals(e2)).) In other words, two lists are defined to be equal if they contain the same elements in the same order. This definition ensures that the equals method works properly across different implementations of the ...