用Java语音写一个计算长方体，圆柱体，球体的程序，运用Copyable接口

好的，下面是用 Java 语言实现计算长方体、圆柱体和球体体积的代码，并实现 Copyable 接口：

首先是 Copyable 接口的定义：

public interface Copyable {
    public Object copy();
}

然后是长方体、圆柱体和球体的实现：

public class Cuboid implements Copyable {
    private double length;
    private double width;
    private double height;

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

    public double getLength() {
        return length;
    }

    public void setLength(double length) {
        this.length = length;
    }

    public double getWidth() {
        return width;
    }

    public void setWidth(double width) {
        this.width = width;
    }

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public double getVolume() {
        return length * width * height;
    }

    @Override
    public Object copy() {
        return new Cuboid(length, width, height);
    }
}

public class Cylinder implements Copyable {
    private double radius;
    private double height;

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

    public double getRadius() {
        return radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

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

    @Override
    public Object copy() {
        return new Cylinder(radius, height);
    }
}

public class Sphere implements Copyable {
    private double radius;

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

    public double getRadius() {
        return radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }

    public double getVolume() {
        return 4.0 / 3.0 * Math.PI * radius * radius * radius;
    }

    @Override
    public Object copy() {
        return new Sphere(radius);
    }
}

最后，我们可以使用这些类来计算体积，以及复制对象：

public class Main {
    public static void main(String[] args) {
        Cuboid cuboid = new Cuboid(3, 4, 5);
        Cylinder cylinder = new Cylinder(2, 5);
        Sphere sphere = new Sphere(3);

        System.out.println("Cuboid volume: " + cuboid.getVolume());
        System.out.println("Cylinder volume: " + cylinder.getVolume());
        System.out.println("Sphere volume: " + sphere.getVolume());

        // 复制对象
        Cuboid cuboidCopy = (Cuboid) cuboid.copy();
        System.out.println("Cuboid copy volume: " + cuboidCopy.getVolume());
    }
}

希望这段代码能够帮到你，如果你有任何问题或者需要进一步的帮助，请随时向我提问。