一个Java计划，显示5名员工的每周工资单(所需输出错误)

Question

我的编码基于此问题：问题的屏幕截图

这是我编码的，它已经完成，但是我在所需的输出中有错误。

package assignment_2;
import java.util.Scanner;
public class Assignment_2 {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner input = new Scanner (System.in);
        
        String employeeName[] = new String[5];
        int employeeID[] = new int[5];
        int payStatus[] = new int[5];
        double Grosspay[] = new double [5];
        int workHours[] = new int[5];
        double payRateperhour[] = new double [5];
        double incomeTax[] = new double [5];
        double netPay[] = new double [5];
        
        
        
        System.out.println("Enter 5 employee details.");
        
        for (int i = 0; i < 5; i++) {
            String nextLine = input.nextLine(); //skip whitespace error
            System.out.print("Enter Employee " + (i+1) + " name: "); //prompt user input for employee name
            employeeName[i] = input.nextLine();
            System.out.print("Enter Employee " + (i+1) + " ID: "); //prompt user input for employee ID
            employeeID[i] = input.nextInt();
            System.out.print("Enter Employee " + (i+1) + " pay status (1 = Salary or 2 = Hourly): "); //prompt user input for employee paid by salary or hourly?
            payStatus[i] = input.nextInt();
            if (payStatus[i] == 1){ //pay by salary user input
                System.out.print("Enter employee gross pay(RM): ");
                Grosspay[i] = input.nextDouble();
                System.out.print("Enter employee work hours per week: ");
                workHours[i] = input.nextInt();
            } else { //pay by hourly user input
                System.out.print("Enter employee pay rate per hour(RM): ");
                payRateperhour[i] = input.nextDouble();
                System.out.print("Enter employee work hours per week: ");
                workHours[i] = input.nextInt();
                //calculate overtime pay
                if (workHours[i] > 40) {
                    Grosspay[i] = (40 * payRateperhour[i]) + 1.5 * (workHours[i] - 40) * payRateperhour[i];
                } else Grosspay[i] = workHours[i] * payRateperhour[i];
            }
        
        //calculate income tax
        if (Grosspay[i] > 0.00 || Grosspay[i] < 999.99) {
            incomeTax[i] = (8 /100) * Grosspay[i];
        } else if (Grosspay[i] > 500.00 || Grosspay[i] < 999.99) {
            incomeTax[i] = (10 /100) * Grosspay[i];
        } else if (Grosspay[i] > 1000.00) {
            incomeTax[i] = (15 /100) * Grosspay[i];
        } else
            
        //calculate net pay 
        netPay[i] = Grosspay[i] - incomeTax[i];
        
    }
//Display employee details and weekly salary
        System.out.print("nnttPrint Daily Company (PDC)ntt   Weekly Payroll Datan");
        System.out.println("----------------------------------------------------------------");
        System.out.println("   NamettID#tGross PaytTaxtNet Pay");
        for (int i = 0; i < 5; i++) {
            System.out.println(employeeName[i] + "t" + employeeID[i] + "t" + Grosspay[i] + "t" + incomeTax[i] + "t" + netPay[i]);
                    }
        
    }
    
}

我的错误是它没有计算所得税。在输出中，它显示0.00。净薪水的输出与总工资相同的金额。我在程序中键入的给定样本的输出之一与其余的输出不同。

不同。

P.S：我也不知道如何修复空格操作系统的错误跳过输入线。因此，我只是插入字符串nextline = input.nextline（）;//在所有用户输入之前跳过空格错误。（如果有人可以帮助我或教/向我展示一个顺利的输出，那就太好了）

预先感谢您。

下面是我的输出的样子，以防万一有人想知道。输出的屏幕截图

[更新]：这是我程序的更新输出。在此处输入图像描述，我的净支付不起作用，因此作为小数点值。仍然需要帮助。

预先感谢您。

Answer 1

，所以这个小的"问题"并不容易抓住。但从本质上讲，Java通过舍入数字欺骗了您。每当您使用（8/100）或任何其他计算所得税计算时，Java都会将它们舍入0，因为整数/整数都被解释为整数结果。修复它的最简单方法就是将.0添加到每个100。

    if (Grosspay[i] > 0.00 || Grosspay[i] < 999.99) {
        incomeTax[i] = (8 / 100.0) * Grosspay[i];
    } else if (Grosspay[i] > 500.00 || Grosspay[i] < 999.99) {
        incomeTax[i] = (10 / 100.0) * Grosspay[i];
    } else if (Grosspay[i] > 1000.00) {
        incomeTax[i] = (15 / 100.0) * Grosspay[i];
    }

这应该有效。