java复数类总结

Java中的复数类可以用来进行复数运算和处理。以下是Java中复数类的总结：

1. Java自带的复数类：Java中自带了Complex类，可以通过导入java.util.Complex包来使用。

2. 复数类的定义：复数类通常由实部和虚部组成，可以定义一个复数类来表示这两个部分。例如：

public class Complex {
    private double real;
    private double imag;
    // 构造方法
    public Complex(double real, double imag) {
        this.real = real;
        this.imag = imag;
    }
    // getter和setter方法
    public double getReal() {
        return real;
    }
    public void setReal(double real) {
        this.real = real;
    }
    public double getImag() {
        return imag;
    }
    public void setImag(double imag) {
        this.imag = imag;
    }
}

3. 复数类的运算：复数类可以进行加、减、乘、除等运算，例如：

public Complex add(Complex other) {
    double real = this.real + other.real;
    double imag = this.imag + other.imag;
    return new Complex(real, imag);
}
public Complex subtract(Complex other) {
    double real = this.real - other.real;
    double imag = this.imag - other.imag;
    return new Complex(real, imag);
}
public Complex multiply(Complex other) {
    double real = this.real * other.real - this.imag * other.imag;
    double imag = this.real * other.imag + this.imag * other.real;
    return new Complex(real, imag);
}
public Complex divide(Complex other) {
    double real = (this.real * other.real + this.imag * other.imag) / (Math.pow(other.real, 2) + Math.pow(other.imag, 2));
    double imag = (this.imag * other.real - this.real * other.imag) / (Math.pow(other.real, 2) + Math.pow(other.imag, 2));
    return new Complex(real, imag);
}

4. 复数类的常用方法：复数类还可以实现一些常用方法，例如获取模长和相角，例如：

public double getModulus() {
    return Math.sqrt(Math.pow(this.real, 2) + Math.pow(this.imag, 2));
}
public double getArgument() {
    return Math.atan2(this.imag, this.real);
}

5. 复数类的使用：定义好复数类后，就可以通过实例化对象来进行复数运算，例如：

Complex c1 = new Complex(2, 3);
Complex c2 = new Complex(4, -2);
Complex sum = c1.add(c2);
Complex difference = c1.subtract(c2);
Complex product = c1.multiply(c2);
Complex quotient = c1.divide(c2);
double modulus = c1.getModulus();
double argument = c1.getArgument();

以上就是Java复数类的总结。