//最常規(guī)的一種遍歷方法，最常規(guī)就是最常用的，雖然不復(fù)雜，但很重要，這是我們最熟悉的，就不多說了！！
public static void work(Map<String, Student> map) {
Collection<Student> c = map.values();
Iterator it = c.iterator();
for (; it.hasNext();) {
System.out.println(it.next());
}
}
//利用keyset進(jìn)行遍歷，它的優(yōu)點(diǎn)在于可以根據(jù)你所想要的key值得到你想要的 values，更具靈活性！！
public static void workByKeySet(Map<String, Student> map) {
Set<String> key = map.keySet();
for (Iterator it = key.iterator(); it.hasNext();) {
String s = (String) it.next();
System.out.println(map.get(s));
}
}
//比較復(fù)雜的一種遍歷在這里，呵呵~~他很暴力哦，它的靈活性太強(qiáng)了，想得到什么就能得到什么~~
public static void workByEntry(Map<String, Student> map) {
Set<Map.Entry<String, Student>> set = map.entrySet();
for (Iterator<Map.Entry<String, Student>> it = set.iterator(); it.hasNext();) {
Map.Entry<String, Student> entry = (Map.Entry<String, Student>) it.next();
System.out.println(entry.getKey() + "--->" + entry.getValue());
}
}
}