只想将hashmap中的第一个键和第二个键赋给长变量xyzId1和xyzId2

public static Map<Long, Map<String, String>> xyz1 = new HashMap<Long, 
                                                     Map<String, String>>();
Map<Integer, Integer> map = new HashMap<Integer, Integer>();
   for (Map.Entry<Long, Map<String, String>> entry : xyz1.entrySet()) {
        System.out.println("Key = " + entry.getKey() + ", Value = " + 
        entry.getValue());
        Long xyzId1 = entry.getKey();
        Long xyzId2 = entry.getKey();
}