试编写java代码，实现复数求和运算，要求能够满足两个复数数、复数数组的求和运算需求

以下是实现复数求和运算的Java代码：

public class Complex {
    private double real;
    private double imag;

    public Complex(double real, double imag) {
        this.real = real;
        this.imag = imag;
    }

    public Complex add(Complex other) {
        double newReal = this.real + other.real;
        double newImag = this.imag + other.imag;
        return new Complex(newReal, newImag);
    }

    public static Complex add(Complex[] complexArray) {
        Complex sum = new Complex(0, 0);
        for (Complex c : complexArray) {
            sum = sum.add(c);
        }
        return sum;
    }

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

这个类包含了两个方法：

- `add(Complex other)`：实现两个复数相加的操作。
- `add(Complex[] complexArray)`：实现多个复数相加的操作。

使用示例如下：

public class Main {
    public static void main(String[] args) {
        Complex c1 = new Complex(1, 2);
        Complex c2 = new Complex(3, 4);
        Complex c3 = new Complex(5, 6);
        Complex[] complexArray = { c1, c2, c3 };
        Complex sum = Complex.add(complexArray);
        System.out.println("Sum: " + sum);
    }
}

输出结果为：

Sum: 9.0 + 12.0i