java 设置多个泛型类型

 1  class NotePad<K,V>{
 2     private K key;
 3     private V value;
 4     public K getKey() {
 5         return key;
 6     }
 7     public void setKey(K key) {
 8         this.key = key;
 9     }
10     public V getValue() {
11         return value;
12     }
13     public void setValue(V value) {
14         this.value = value;
15     }
16 
17     
18 }
19 
20 public class dsadas {
21     public static void main(String args[]){
22         Notepad<String,Integer> t=new Notepad<String ,Integer>();
23         t.setKey("李兴华");
24         t.setValue(30);
25         System.out.println("Name:"+t.getKey());
26         System.out.println("Age:"+t.getValue());
27     }
28 }