java集合map取key使用示例 java遍历map

for (iterator i = keys.iterator(); i.hasnext()
       {
           string key = (string) i.next();
           string value = (string) map.get(key);
           text+=key + " = " + value;
       }

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或者
or (map.entry<string,string> entry : map.entryset()) {
  string key = entry.getkey();
  string value = entry.getvalue();
  // do stuff
}   iterator<entry<string, string>> iterator = map.entryset().iterator();

        entry< string, string> entry;
        while(iterator.hasnext()){
            entry = iterator.next();
            log.d("key value",entry.getkey()+" "+entry.getvalue());
        }