我想创建一个如下所示的HashMap：
{LOCATION =[China,Sydney, New York,...], NAME = [Bob Smith, Martha Stewart, Amanda Holmes,....], ORGANIZATION = [Matrix Inc, Paragon Pharmaceuticals, Wills Corp.,...]}
我有多个具有多个值的键。最好的方法是什么？
最佳答案
您需要的是Map<String, List<String>>
例：
Map<String, List<String>> myMap = new HashMap<>();
myMap.put("Location", Arrays.asList("a", "b", "c"));
myMap.put("Name", Arrays.asList("b", "mar", "ama"));
myMap.put("Org", Arrays.asList("ma", "par", "wil"));
System.out.println(myMap);
输出：
{Org = [ma，par，wil]，Location = [a，b，c]，Name = [b，mar，ama]}