用Short和int重载 [英] Overloading with Short and int

问题描述

为什么这段代码会打印int？

Why this code will print int?

public static void main(String[] args) {
    short s = 5;
    A(s);
}
public static void A(int a){
    System.out.println("int");
}

public static void A(Short a){
    System.out.println("short");
}

推荐答案

因为向上转换为 int 在Java 1.0版本中，并在5.0版本中添加了自动装箱。改变行为会破坏为旧版Java编写的代码。

Because upcasting to int was in version 1.0 of Java and auto-boxing was added in version 5.0. Changing the behaviour would break code written for older version of Java.

然而，这样的混合类型表明你的设计有问题，它只是你要去的东西在益智游戏中找到。 ;）

However, mixing types like this suggests there is something wrong with your design, its only something you are going to find in puzzlers. ;)

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