java中LinkedHashMap和HashMap区别

public static void main(String[] args) {

    Map<String, String> map = new LinkedHashMap<String, String>();

    map.put("apple", "苹果");

    map.put("watermelon", "西瓜");

    map.put("banana", "香蕉");

    map.put("peach", "桃子");

    Iterator iter = map.entrySet().iterator();

    while (iter.hasNext()) {

        Map.Entry entry = (Map.Entry) iter.next();

        System.out.println(entry.getKey() + "=" + entry.getValue());

    }

}