Java：添加两个对象 [英] Java: add two objects

问题描述

我正在 Greenfoot 制作一个项目，我做了一个假想的数字课程。在我的项目中，我发现需要将两个虚构对象一起添加（或减去或其他），是否有办法添加两个这样的对象？所以这就是它在完美世界中的表现：

I was making a project in Greenfoot and I made an imaginary number class. In my project I found a need to add (or subtract, or whatever) two imaginary objects together, is there a way to add two objects like that? So this is how it would look in a perfect world:

    Imaginary i1 = new Imaginary(1.7,3.14);
    Imaginary i2 = new Imaginary(5.3,9.1);
    //the class Imaginary has parameters (double real, double imaginary)
    Imaginary i3 = i1+i2;

这可能吗？

推荐答案

Java 没有运算符重载。

例如， BigDecimal a + b 而不是 a.add（b），$ c>会更受欢迎。

For example, BigDecimal would be a lot more popular if you could write a + b instead of a.add(b).

方式1 。

Imaginary i3 = i1.add(i2);

方法：

public static Imaginary add(Imaginary i2)
{
    return new Imaginary(real + i2.real, imaginary + i2.imaginary);
}

方式2 。

Imaginary i3 = add(i1, i2)

方法：

public static Imaginary add(Imaginary i1, Imaginary i2)
{
    return new Imaginary(i1.real + i2.real, i1.imaginary + i2.imaginary);
}

运算符重载肯定会使设计比没有它更复杂，它可能会导致更复杂的编译器或减慢JVM。

Operator overloading would have definitely made design more complex than without it, and it might have led to more complex compiler or slows the JVM.

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