static不实现多态

 1 class Father
 2 {
 3     
 4     public static String getName()
 5     {
 6         return "father";
 7     }
 8 }
 9 
10 class Children extends Father
11 { 
12     public static String getName()
13     {
14         return "children";
15     }
16 }
17 public class staticTest {
18     public static void main(String[] args) {
19         // TODO Auto-generated method stub
20         Father father=new Father();
21         Father children=new Children();
22         System.out.println(father.getName());
23         System.out.println(children.getName());
24     }
25 
26 }

View Code

代码中子类和父类都声明为static的函数，注意static不依赖于对象的实例，而依赖于对象，声明对象的时候就分配空间。所以它是依赖于类的，Father children的时候就打印出Father的father.结果为 father father

去掉static才能实现多态。