rainman wrote:
现弄个中文翻译：
override : 重载，这个重（chong2）含义是重叠，覆盖（基类方法）
overload: 过载，这个过，难道是过度，过量？本来已经有了一个方法，现在又做一个相同名字，返回类型的方法，但接受的参数不一样。

javait wrote:
the key point is the "signature" of that class.

if you have an object reference of Class B, method ii will be called.
if the reference is Class A, method i will be called.

        // TestBinding.java
        class Base { 
          String s = "string in Base";
          void init(){
            System.out.println("init() call in Base");
              
          }
        } 
        class SubBase extends Base{ 
          String s = "string in SubBase";
          void init(){
            System.out.println("init() call in SubBase");
              
          }
        }
        
        public class TestBinding {
          public static void main(String[] args) {
            Base b = new SubBase();
          
            // static binding on instance fields
            System.out.println(b.s); //string in Base
          
            // dynamic binding on instance methods
            b.init();             //init() call in SubBase
          }
        }