遍历map效率最高的方法

Map<String,String> map=dbUtil.executeQuery(sql, null);
Iterator iter=map.entrySet().iterator();
//Test..循环输出数据
while(iter.hasNext()){
Map.Entry<String,String> entry = (Map.Entry<String,String>) iter.next();
String key=entry.getKey();
String value=entry.getValue();
System.out.println("key="+key+" "+"value="+value);
}