用java编写一个底面积的抽象类ThreeDimen并将圆球、圆柱、圆锥、长方体、正方体，根据传递的参数计算三维图形的体积。

好的，这是一个技术问题，我可以回答。以下是代码示例：

public abstract class ThreeDimen {
    public abstract double getArea();
    public abstract double getVolume(double... args);
}

class Sphere extends ThreeDimen {
    private double radius;

    Sphere(double radius) {
        this.radius = radius;
    }

    @Override
    public double getArea() {
        return 4 * Math.PI * radius * radius;
    }

    @Override
    public double getVolume(double... args) {
        return 4 / 3.0 * Math.PI * radius * radius * radius;
    }
}

class Cylinder extends ThreeDimen {
    private double radius;
    private double height;

    Cylinder(double radius, double height) {
        this.radius = radius;
        this.height = height;
    }

    @Override
    public double getArea() {
        return 2 * Math.PI * radius * height + 2 * Math.PI * radius * radius;
    }

    @Override
    public double getVolume(double... args) {
        return Math.PI * radius * radius * height;
    }
}

class Cone extends ThreeDimen {
    private double radius;
    private double height;

    Cone(double radius, double height) {
        this.radius = radius;
        this.height = height;
    }

    @Override
    public double getArea() {
        double slantHeight = Math.sqrt(radius * radius + height * height);
        return Math.PI * radius * slantHeight + Math.PI * radius * radius;
    }

    @Override
    public double getVolume(double... args) {
        return 1 / 3.0 * Math.PI * radius * radius * height;
    }
}

class RectangularSolid extends ThreeDimen {
    private double length;
    private double width;
    private double height;

    RectangularSolid(double length, double width, double height) {
        this.length = length;
        this.width = width;
        this.height = height;
    }

    @Override
    public double getArea() {
        return 2 * (length * width + length * height + width * height);
    }

    @Override
    public double getVolume(double... args) {
        return length * width * height;
    }
}

class Cube extends ThreeDimen {
    private double side;

    Cube(double side) {
        this.side = side;
    }

    @Override
    public double getArea() {
        return 6 * side * side;
    }

    @Override
    public double getVolume(double... args) {
        return side * side * side;
    }
}

我们可以创建各种不同的三维图形对象，然后调用它们的getVolume方法来计算它们的体积，比如这样：

public static void main(String[] args) {
    ThreeDimen sphere = new Sphere(5);
    ThreeDimen cylinder = new Cylinder(3, 10);
    ThreeDimen cone = new Cone(4, 8);
    ThreeDimen rectSolid = new RectangularSolid(5, 6, 7);
    ThreeDimen cube = new Cube(4);

    double sphereVolume = sphere.getVolume();
    double cylinderVolume = cylinder.getVolume();
    double coneVolume = cone.getVolume();
    double rectSolidVolume = rectSolid.getVolume();
    double cubeVolume = cube.getVolume();

    System.out.println("Sphere volume: " + sphereVolume);
    System.out.println("Cylinder volume: " + cylinderVolume);
    System.out.println("Cone volume: " + coneVolume);
    System.out.println("Rectangular solid volume: " + rectSolidVolume);
    System.out.println("Cube volume: " + cubeVolume);
}

这将输出每个图形的体积。希望这可以帮助你解决问题！