Question

我对编码很陌生并且对使用其他类的switch语句有疑问。这是我的原始功能类，它接受用户输入，然后提供有关公寓定价的信息。首先，要求用户选择公寓类型（＃1-3），然后提示他们决定是否需要停车位或车库（1或2）。我试图将类分开，以便只有方法在一个类中，而main方法中的其余代码在另一个类（测试类）中。我遇到的问题是找出一种通过switch语句传递用户输入的方法。我试图找到方法，但没有运气。

import java.util.Scanner;

public class CondoSales

{  

public static void main(String[] args)   

{


System.out.println("Please select one of the following for pricing 
information: " +
"1 for a condo with a park view, 2 for a condo with a golf course view, or 3 
for a condo with a lake view.");

Scanner input = new Scanner(System.in);
int priceSelection;
priceSelection = input.nextInt();

final int PARK_VIEW = 150000;
final int GOLF_COURSE_VIEW = 175000;
final int LAKE_VIEW = 210000;
int parkingCost;

  switch(priceSelection)

  {

     case (1): 
        System.out.println("The condo with a park view costs $" + PARK_VIEW);
        parkingCost = PARK_VIEW;
     break;

     case (2): 
        System.out.println("The condo with a golf course view costs $" + GOLF_COURSE_VIEW);
        parkingCost = GOLF_COURSE_VIEW;
     break;

     case (3):
        System.out.println("The condo with a lake view costs $" + LAKE_VIEW + ".");
        parkingCost = LAKE_VIEW;
     break;

     default:
        System.out.println("$0");
        parkingCost = 0;

  }         

 System.out.println("Select 1 for a parking spot or 2 for a garage:");   

  int parkingSpecification;
  parkingSpecification = input.nextInt();   

  switch(parkingSpecification)

  {

     case (1):
        System.out.println("With a parking spot, the cost is $" + parkingCost);
     break;

     case (2):
        System.out.println("With a garage, the cost is $" + (parkingCost + 5000));  
     break;

     default:
        System.out.println("You have entered an invalid response; the condo will cost $" + parkingCost + ".");   
 }
 }
 }

这是测试类，我还没有弄清楚如何将价格选择输入传递到原始类的开关。任何帮助将不胜感激，因为我一直在撞墙试图解决这个问题。谢谢！

import java.util.Scanner;

public class TestCondoSales

{

final int PARK_VIEW = 150000;
final int GOLF_COURSE_VIEW = 175000;
final int LAKE_VIEW = 210000;
int parkingCost;

public static void main(String[] args)   

{

CondoSales methodRetrieval = new CondoSales();


System.out.println("Please select one of the following for pricing 
information: " +
"1 for a condo with a park view, 2 for a condo with a golf course view, or 3 
for a condo with a lake view.");

Scanner input = new Scanner(System.in);
int priceSelection;
priceSelection = input.nextInt();


methodRetrieval.priceReturn(priceSelection);


System.out.println("Select 1 for a parking spot or 2 for a garage:"); 

int parkingSpecification;
Scanner input2 = new Scanner(System.in);
parkingSpecification = input.nextInt();  

methodRetrieval.parkingReturn(parkingSpecification);




}
}

Answer 1

尝试将切换条件用作另一个类中的方法参数，然后将输入传递给该方法。例如：

import java.util.Scanner;

public class CondoPriceSelector {

    public static void main(String[] args) {
        PriceSelector selector = new PriceSelector();
        try(Scanner scan = new Scanner(System.in)){
            int priceSelection = scan.nextInt();
            selector.printPrice(priceSelection);
        }
    }
}

class PriceSelector {
    final int parkingCost = 5000;

    public void printPrice(int selection) {
        switch (selection) {
            case (1):
                System.out.println("With a parking spot, the cost is $" + parkingCost);
                break;
            case (2):
                System.out.println("With a garage, the cost is $" + (parkingCost + 5000));  
                break;

            default:
                System.out.println("You have entered an invalid response; the condo will cost $" + parkingCost + ".");
        }
    }
}

如何通过另一个类

1 个答案: