java复数四则运算

Java中可以通过使用复数的实部和虚部来进行四则运算。以下是一个示例代码，展示了如何在Java中实现复数的加法、减法、乘法和除法运算：

class ComplexNumber {
    private double real;
    private double imaginary;

    public ComplexNumber(double real, double imaginary) {
        this.real = real;
        this.imaginary = imaginary;
    }

    public ComplexNumber add(ComplexNumber other) {
        double newReal = this.real + other.real;
        double newImaginary = this.imaginary + other.imaginary;
        return new ComplexNumber(newReal, newImaginary);
    }

    public ComplexNumber subtract(ComplexNumber other) {
        double newReal = this.real - other.real;
        double newImaginary = this.imaginary - other.imaginary;
        return new ComplexNumber(newReal, newImaginary);
    }

    public ComplexNumber multiply(ComplexNumber other) {
        double newReal = this.real * other.real - this.imaginary * other.imaginary;
        double newImaginary = this.real * other.imaginary + this.imaginary * other.real;
        return new ComplexNumber(newReal, newImaginary);
    }

    public ComplexNumber divide(ComplexNumber other) {
        double divisor = Math.pow(other.real, 2) + Math.pow(other.imaginary, 2);
        double newReal = (this.real * other.real + this.imaginary * other.imaginary) / divisor;
        double newImaginary = (this.imaginary * other.real - this.real * other.imaginary) / divisor;
        return new ComplexNumber(newReal, newImaginary);
    }

    @Override
    public String toString() {
        return real + " + " + imaginary + "i";
    }
}

public class Main {
    public static void main(String[] args) {
        ComplexNumber a = new ComplexNumber(2, 3);
        ComplexNumber b = new ComplexNumber(4, 5);

        ComplexNumber sum = a.add(b);
        System.out.println("Sum: " + sum);

        ComplexNumber difference = a.subtract(b);
        System.out.println("Difference: " + difference);

        ComplexNumber product = a.multiply(b);
        System.out.println("Product: " + product);

        ComplexNumber quotient = a.divide(b);
        System.out.println("Quotient: " + quotient);
    }
}