请帮我通过LinkedHashMap<String,ArrayList<String>> h
创建一个循环:如何通过LinkedHashMap <String,ArrayList <String>>创建一个循环?
if (h.get("key1").size() == 0)
System.out.println("There is no errors in key1.");
else
System.out.println("ERROR: there are unexpected errors in key1.");
if (h.get("key2").size() == 0)
System.out.println("There is no errors in key2.");
else
System.out.println("ERROR: there are unexpected errors in key2.");
if (h.get("key3").size() == 0)
System.out.println("There is no errors in key3.");
else
System.out.println("ERROR: there are unexpected errors in key3.");
if (h.get("key4").size() == 0)
System.out.println("There is no errors in key4.\n");
else
System.out.println("ERROR: there are unexpected errors in key4.\n");
你可以加我的确切消息到您的循环? – Prostak 2011-05-05 18:03:28
@Prostak检查我的编辑。听起来就是你想要的。 – 2011-05-05 18:06:19
有点迟了,但是按照插入顺序返回还是必须使用迭代器? 'LinkedHashMap'的javadocs和'HashMap'的javadocs相同。 – edthethird 2013-04-11 02:02:53