Question

如何取出Map中key和value的值

Answer 1

public static void main(String[] args) {
Map<String, String> map = new HashMap<String, String>();
map.put("1", "v1");
map.put("2", "v2");
for (String key : map.keySet()) {
System.out.println("key= " + key + " and value= " + map.get(key));
}
}