Java 8引入的Stream API可以非常方便地处理集合,包括Map。我们可以使用forEach方法来遍历Map的entrySet,并比较两个Map的差异。 java import java.util.Map; import java.util.HashMap; import java.util.Objects; public class MapDifference { public static void main(String[] args) { Map<String, Integer&...
Map<String, Integer> map1 = Map.of("A", 1, "B", 2); Map<String, Integer> map2 = Map.of("A", 1, "B", 2); Assertions.assertTrue( map1.keySet().equals(map2.keySet()) ); Map<String, Integer> map3 = Map.of("A", 1, "B", 2, "C", 3, "D", 4); Assertions.asse...
下面是一个简单的代码示例,它展示了如何比较两个 Map 的差异。 importjava.util.HashMap;importjava.util.Map;publicclassMapDifference{publicstaticvoidmain(String[]args){Map<String,String>map1=newHashMap<>();map1.put("key1","value1");map1.put("key2","value2");map1.put("key3","value3")...
importjava.util.HashMap;importjava.util.Map;publicclassMapDifference{publicstaticvoidmain(String[]args){Map<String,Integer>mapA=newHashMap<>();mapA.put("key1",1);mapA.put("key2",2);mapA.put("key3",3);Map<String,Integer>mapB=newHashMap<>();mapB.put("key2",2);mapB.put("key3"...
public class MapUtil { /** * difference * Maps.difference(Map, Map)用来比较两个Map以获取所有不同点。该方法返回MapDifference对象 */ public static void u(Map<String,Object> map1, Map<String,Object> map2) { MapDifference<String, Object> difference = Maps.difference(map1, map2); ...
Guava的MapDifference对象,它有获取所有四种映射条目的方法: 同样出现在左右地图中 仅在左侧地图 只在右图 键存在于两个映射中,但具有不同的值 所以在你的情况下,它可以只用 3 行代码来解决: MapDifference<String, Record> diff = Maps.difference(sourceRecords, targetRecords); ...
java map差集,并集 public static void getDifferenceSetByGuava(Map<String, Object> bigMap, Map<String, String> smallMap, Map<String, Object> resMap) { Set<String> bigMapKey = bigMap.keySet(); Set<String> smallMapKey = smallMap.keySet();...
下面是 MapDifference 的一些方法: Map<String, Integer> left = ImmutableMap.of("a", 1, "b", 2, "c", 3); Map<String, Integer> right = ImmutableMap.of("b", 2, "c", 4, "d", 5); MapDifference<String, Integer> diff = Maps.difference(left, right); ...
Map<K,MapDifference.ValueDifference<V>>entriesDiffering() Returns an unmodifiable map describing keys that appear in both maps, but with different values. hashCode inthashCode() Returns the hash code for this instance. This is defined as the hash code of ...
也就是说,使用 map() 返回的是 FluxMapFuseable FluxMapFuseable 是什么? FluxFlatMap 是什么? FluxFlatMap 和 FluxMapFuseable 是什么区别? 各位看官可以一起讨论! 参考链接: baeldung: Project Reactor: map() vs flatMap() csdn: map VS flatmap geeksforgeeks: Difference Between map() And flatMap...