记录形状并提供输出

Question

我正在尝试创建一个代码，询问用户要处理的形状数量，并询问用户是矩形，正方形还是圆形。一旦有了它，它将打印出面积和周长。

我还没有使它起作用，因为一旦它询问用户形状的数量，它只是打印出数据而没有询问长度，宽度或半径。

该代码分为两类：一类用于输入和输出，另一类用于计算。

这是进行计算的类

package edu.uic.ids.model;

import java.text.NumberFormat;

public class Shape {

    //inputs
    private double length;
    private double width;
    private double radius;
    String command;

    //outputs
    private double area;
    private double perimeter;
    private String areaString;
    private String perimeterString;

    public Shape() {
        // TODO Auto-generated constructor stub
        length = 0.0;
        width = 0.0;
        radius = 0.0;
        command = "";

        area = 0.0;
        perimeter = 0.0;
        areaString = "";
        perimeterString = "";

    }

    public Shape(double length, double width, double radius, String command, double area, double perimeter,
            String areaString, String perimeterString) {
        super();
        this.length = length;
        this.width = width;
        this.radius = radius;
        this.command = command;
        this.area = area;
        this.perimeter = perimeter;
        this.areaString = areaString;
        this.perimeterString = perimeterString;
    }

    public void computeShape() {


        if (command.equalsIgnoreCase("R")) {

            area = length * width;
            perimeter = 2 * (length + width);
            NumberFormat nf = NumberFormat.getInstance();
            nf.setMaximumFractionDigits(3);
            nf.setMinimumFractionDigits(3);
            areaString = nf.format(area);
            perimeterString = nf.format(perimeter);

        }

        else if (command.equalsIgnoreCase("C")) {

        area = Math.PI * Math.pow(radius, 2);
        perimeter = 2 * Math.PI * radius;
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(3);
        nf.setMinimumFractionDigits(3);
        areaString = nf.format(area);
        perimeterString = nf.format(perimeter);

        }

        else if (command.equalsIgnoreCase("S")) {

            area = length * width;
            perimeter = 4 * length;
            NumberFormat nf = NumberFormat.getInstance();
            nf.setMaximumFractionDigits(3);
            nf.setMinimumFractionDigits(3);
            areaString = nf.format(area);
            perimeterString = nf.format(perimeter);
        }

            }

    public String getCommand() {
        return command;
    }

    public void setCommand(String command) {
        this.command = command;
    }

    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 getRadius() {
        return radius;
    }

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

    public double getArea() {
        return area;
    }

    public double getPerimeter() {
        return perimeter;
    }

    public String getAreaString() {
        return areaString;
    }

    public String getPerimeterString() {
        return perimeterString;
    }

}

这是输入和输出的代码

package edu.uic.ids.console;

import java.util.Scanner;

import edu.uic.ids.model.Shape;

public class ShapeDriver {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Scanner scanner = new Scanner(System.in);
        Shape shape = null;

        double length = 0.0;
        double width = 0.0;
        double radius = 0.0;

        System.out.println("IDS401 Assignment Number 5 - Shapes Calculator");

        System.out.println("Enter maximum number of shapes: ");
        int maxNumberShapes = scanner.nextInt();

        Shape shapeArray [] = new Shape [maxNumberShapes];

        int shapeNumber = 0;

        while(true) {

            shape = new Shape();
            System.out.println();



            System.out.println("Enter Type of Shape (S for Square, R for rectangle, and C for Circle): ");
            shape.setCommand(scanner.nextLine());

            String command = shape.getCommand();

            if (command.equalsIgnoreCase("R")) {

                System.out.println(
                        "Enter Length: " +  
                        "Enter Width: ");

                length = scanner.nextDouble();
                width = scanner.nextDouble();

                shape.setLength(length);
                shape.setWidth(width);

            }
            else if (command.equalsIgnoreCase("S")) {

                System.out.println(
                        "Enter Length: " +  
                        "Enter Width: ");

                length = scanner.nextDouble();
                width = scanner.nextDouble();

                shape.setLength(length);
                shape.setWidth(width);

            }
            else if (command.equalsIgnoreCase("C")) {

                System.out.println(
                        "Enter Radius: ");

                radius = scanner.nextDouble();

                shape.setRadius(radius);

            }

            shape.computeShape();

                System.out.println(
                        "\n" +
                "Length: " + shape.getLength() + "\n" +
                "Width: " + shape.getWidth() + "\n" +
                "Radius: " + shape.getRadius() + "\n" +
                "Area: " + shape.getAreaString() + "\n" +
                "Perimeter: " + shape.getPerimeter() + "/n\n");

                shapeArray[shapeNumber++] = shape;

                System.out.println("Continue (y or n): ");
                if(scanner.next().equalsIgnoreCase("n") || maxNumberShapes == shapeNumber) {

                    break;
                }
        }

        System.out.println("shapeNumber\tlength\twidth\tradius\tarea\tperimeter\n");

            for(int i = 0; i < maxNumberShapes; i++) {
                if (shapeArray[i] == null)
                    continue;

                shape = shapeArray[i];
                System.out.println("\t" + i + "\t" + 
                                shape.getLength() + "\t" +
                                shape.getWidth() + "\t\t" + 
                                shape.getRadius() + "\t+t" +
                                shape.getAreaString() + "\t" +
                                shape.getPerimeterString());
            }

            System.out.println("\nShape app exit\n");

            scanner.close();

    }

}

任何帮助都会很棒