复数运算的JAVA类

//这个类表示复数,定义了执行复数运算的方法.
public class ComplexNumber {
    private double x, y;
    //初始化X和Y的构造函数
    public ComplexNumber(double real, double imaginary) {
        this.x = real;
        this.y = imaginary;

    }
//返回复数实部的存取器方法
    public double real() {
        return x;
    }
    //返回复数虚部的存取器方法
    public double imaginary() {
        return y;
    }
//计算复数的幅值
    public double magnitude() {
        return Math.sqrt(x * x + y * y);
    }
//将其转换为一个字符串.这个方法很常用.
    public String toString() {
        return "(" + x + "," + y + ")";
    }
//静态类方法,接受两个复数,相加,返回它们的和.
    public static ComplexNumber add(ComplexNumber a, ComplexNumber b) {
        return new ComplexNumber(a.x + b.x, a.y + b.y);
    }
//相加的实例方法
    public ComplexNumber add(ComplexNumber a) {
        return new ComplexNumber(this.x + a.x, this.y + a.y);
    }
//复数相乘的静态类方法
    public static ComplexNumber multiply(ComplexNumber a, ComplexNumber b) {
        return new ComplexNumber(a.x * b.x - a.y * b.y, a.x * b.y + a.y * b.x);
    }
//复数相乘的实例方法
    public ComplexNumber multiply(ComplexNumber a) {
        return new ComplexNumber(x * a.x - y * a.y, x * a.y + y * a.x);
    }

}