多个地图值，我想 return 单个对象中的这 3 个地图值

Question

Map<String, Integer> map1 = new LinkedHashMap<String,
Map<String, Integer> map2= new LinkedHashMap<String,Integer>();
Map<String, Integer> map3 = new LinkedHashMap<String,Integer>();



//dynamic values

map1.put(value1,value2);
map1.put(value1,value2);
map1.put(value1,value2);


Map.Entry<String,Integer> map1Entry = map1.entrySet().iterator().next();
Map.Entry<String,Integer> map2Entry = map2.entrySet().iterator().next();
Map.Entry<String,Integer> map3Entry = map3.entrySet().iterator().next();


String keyValue1 = map1Entry.getKey();
String keyValue2 = map2Entry.getKey();
String keyValue3 = map3Entry.getKey();

我想要 return 键值 1、键值 2、键值 3。在单个对象中 return 的最佳方法是什么？

Answer 1

试试这个

 Set<String> TEMP = new HashSet<String>(Arrays.asList(new String[] { keyValue1, keyValue2, keyValue3}));

多个地图值，我想 return 单个对象中的这 3 个地图值

Multiple Map values and I want to return those 3 map values in a single object

java

collections

linkedhashmap