java - 如何添加月份和日期进行简单的利率计算 (Java)

Question

我正在为一项作业编写一个程序。 在那里，我陷入了如何为我的程序添加日期和月份的困境。

我已经可以将简单利息转换为年，但不能转换为几个月和几天:

  import java.util.Scanner;

  public class SimpleInterest {

    public static void main(String[] args) {
        double PAmount, ROI, TimePeriod, simpleInterset;
        Scanner scanner = new Scanner(System.in);

        System.out.print(" Please Enter the Principal Amount : ");
        PAmount = scanner.nextDouble();

        System.out.print(" Please Enter the Rate Of Interest : ");
        ROI = scanner.nextDouble();

        System.out.print(" Please Enter the Time Period in Years : ");
        TimePeriod = scanner.nextDouble();

        simpleInterset = (PAmount * ROI * TimePeriod) / 100;

        System.out.println("\n The Simple Interest for Principal Amount " + PAmount + " is = " + 
        simpleInterset);   
    }    
  }

Answer 1

只需分别询问他们，然后计算全局时间

System.out.print(" Please Enter the Principal Amount : ");
double pAmount = Double.parseDouble(scanner.nextLine());

System.out.print(" Please Enter the Rate Of Interest : ");
double rOI = Double.parseDouble(scanner.nextLine());

System.out.print(" Please Enter the Time Period in Years : ");
double years = Double.parseDouble(scanner.nextLine());
System.out.print("And months : ");
double months = Double.parseDouble(scanner.nextLine());
System.out.print("And days");
double days = Double.parseDouble(scanner.nextLine());

double timePeriod = years * months / 12 + days / 365;
double simpleInterset = (pAmount * rOI * timePeriod) / 100;

System.out.println("\n The Simple Interest for Principal Amount " + pAmount + " is = " + simpleInterset);

我建议:

• 如果不需要，请不要在使用变量之前定义它
• 使用 nextLine 并解析您需要的内容，您将避免返回字符带来的意外
• 按照 Java 约定，使用小驼峰命名法来命名变量