循环Map方法

public static void main(String[] args) {
Map<String, String> map = new HashMap<String, String>();
map.put("1", "张三");
map.put("2", "李四");
map.put("3", "王五");
/*方法一 ：迭代程序*/
System.out.println("方法一：");
Iterator iterator = map.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry<String, String> entry = (Entry<String, String>) iterator.next();
System.out.println("key:" + entry.getKey() + " value" + entry.getValue());
}
/*方法二*/
System.out.println("方法二：");
for (Map.Entry<String, String> m : map.entrySet()) {
System.out.println("key:" + m.getKey() + " value" + m.getValue());
}
}