java - 如何检查java中的int范围并将其限制为仅5位数字

Question

请帮我完成作业。问题如下:

Create a separate test driver class called TestEmployeePayroll that will test the EmployeePayroll class by performing the following:

Prompt the user to enter the employees’ ID number, First name, Last name, Pay Category and Hours worked (one at a time).

• The user entry for employees ID number must be exactly 5 digits long.
• The user entry for Category must only be accepted if it is in the range 1 to 4.
• The user entry for Hours worked must only be accepted if it is the range 1 to 80.

这就是我到目前为止所做的:

import java.util.Scanner;
public class TestEmployeePayRoll {

    public static void main(String[] args){
        EmployeePayRoll obj1 = new EmployeePayRoll();

        Scanner input = new Scanner(System.in);
        System.out.println("Enter the Employee ID number: "+ " ");
        String EmployeeID = input.nextLine();

        //How to check the range here if int is 5 digits long or not ?

        System.out.println("Enter the first Name: "+ " ");
        String FirstName =  input.nextLine();

        System.out.println("Enter Last Name: "+ " ");
        String LastName = input.nextLine();

        System.out.println("Enter the Pay Category: "+ " ");
        double PayCategory = input.nextDouble();

        System.out.println("Enter the number of hours worked: "+ " ");
        double HoursWorked = input.nextDouble();
    }
}

Answer 1

您可能想要使用Integer.parseInt() .