Question

import javax.swing.JOptionPane;

import java.util.Scanner;

public class pay{

static Scanner sc;

public static void main (String[]args)

{
  double Regpay = 8;
  double OThour = Regpay * 1.5;
  double hours = 0;
  double gpay = Regpay * hours;
  double Totalpay = OThour + gpay;

  Scanner input = new Scanner(System.in);
  System.out.println("Normal pay for hours worked less than 40hrs will be, £8.00 per hour");
  System.out.println("If workers work more than 40hrs, their pay will be time and a half");
  System.out.println("please enter your name");
  String name = sc.nextLine();

  System.out.println("How many hours did you work this month");
  hours = sc.nextDouble();

  System.out.println("How many hours overtime did you work");
  OThour = sc.nextDouble();




  if (hours<=40){
      Totalpay = gpay;
      System.out.print("You are not entitled to overtime pay");
  }else{
      if (hours>=41)
      Totalpay = gpay + OThour >=1;   
    }
  }        
}

我收到了Totalpay = gpay + OThour >=1;行上的错误我不知道该怎么做，我一直在尝试改变一些事情，但我一直得到同样的错误!!!!

Answer 1

您正在寻找的答案（我推测）是测试OTHou是否大于1，将其添加到TotalPay。要实现此目的，请使用

替换TotalPay = TotalPay + OTHours＆gt; = 1

if(OTHours>=1){
    TotalPay = gPay + OTHour;
}

Answer 2

您正在组合两种不兼容的表达类型。

Totalpay = gpay + OThour >=1;

使用操作顺序，＆＃34; gpay + OThour＆gt; = 1＆＃34;是两个表达式：

gpay + OThour : (the sum of two doubles)

(result of gpay + OThour) >= 1  : (a boolean expression)

这样的结果是一个布尔答案（真/假），它不能作为双重解析，因此它不能存储在TotalPay中。

其次，您的结果将不会如预期的那样 - 您使用的变量（gpay）已初始化为0且永远不会更改。

Answer 3

@purpleorb和@ Jaboyc已经解释了为什么会抛出错误。我将谈论一个更全面的解决方案。

这个有几个问题

在从用户输入
布尔分配给双重问题（正如您所提到的）
不必要的if语句结构

您可以将代码更改为以下内容以解决这些问题：

  Scanner input = new Scanner(System.in);
  System.out.println("Normal pay for hours worked less than 40hrs will be, £8.00 per hour");
  System.out.println("If workers work more than 40hrs, their pay will be time and a half");
  System.out.println("please enter your name");
  String name = input.nextLine();

  double hours = 0;
  System.out.println("How many hours did you work this month");
  hours = input.nextDouble();

  double Regpay = 8;
  double OThour = Regpay * 1.5;
  double gpay = Regpay * hours;
  double Totalpay = OThour + gpay;

  if (hours>40){
      Totalpay = gpay + (OThour- 1) * (hours - 40);   
  }else{
      Totalpay = gpay;
      System.out.print("You are not entitled to overtime pay");
    }

这样做是在用户将值输入gpay = Regpay * hours后进行计算Totalpay = OThour + gpay和hours。此外，这通过检查小时数是否大于40来简化if语句结构，然后执行所需的计算。

不兼容的类型：boolean无法转换为double（错误）

3 个答案: