第一种,通过获取键来取得值
private static void method1() {
Map< String, String> map = new HashMap<String,String>();
map.put("001", "张三");
map.put("002", "李四");
map.put("003", "王五");
Set<String> set = map.keySet();
for (String key : set) {
String values = map.get(key);
System.out.println("学号"+key +"----"+ "姓名"+values);
}
}
第二种,采用面对对象的思想,通过Entry对象来遍历
private static void method2() {
Map< String, String> map = new HashMap<String,String>();
map.put("001", "张三");
map.put("002", "李四");
map.put("003", "王五");
Set<Map.Entry<String,String>> key=map.entrySet();
for (Map.Entry<String, String> entry : key) {
String keys = entry.getKey();
String values = entry.getValue();
System.out.println("学号"+keys +"----"+ "姓名"+values);
}
}