不知道我做錯了什么

Question

public class MainClass {

    public static void main(String[] args) {

        Employee employee = new Employee();

        //Prompt for and then set the first name, last name, gender, dependents
        employee.setFirstName(getInput("First Name: "));
        employee.setLastName(getInput("Last Name: "));
        employee.setGender(getInput("Gender: ").charAt(0));

        employee.setDependents(getInput("Dependents: "));
        employee.setAnnualSalary(getInput("Annual Salary: "));

        //display divider
        displayDivider("Employee Information");

        //Display the employee information
        employee.displayEmployee();
        System.out.println("Number of Employees: " + Employee.getNumEmployees());

        //Second Employee
        Employee employee2 = new Employee("Mary", "Noia", 'F' , 5 ,  24000.0);

        //display divider
        displayDivider("Employee Information");
        employee2.displayEmployee();
        System.out.println("Number of Employees: " + Employee.getNumEmployees());

    } //end of main

    public static String getInput(String inputType)
    {
        String input = "";
        input = JOptionPane.showInputDialog("Enter the " + inputType);

        return input;

    }

    public static void displayDivider(String outputTitle)
    {

        System.out.println("*********" + outputTitle + "********");

    }//end of displayDvider

} //end of MainClass

這是我的結果。 但我想在最后得到員工人數：2

*********Employee Information********
First Name: Arooba
Last Name:  Munir
Gender: F
Number of Dependents:   2
Annual Salary:  $50,000.00
Weekly Pay: $961.54
Number of Employees: 1
*********Employee Information********
First Name: Mary
Last Name:  Noia
Gender: F
Number of Dependents:   5
Annual Salary:  $24,000.00
Weekly Pay: $461.54
Number of Employees: 1

Answer 1

我認為您應該將兩名員工放入一個數組列表並獲取數組列表的大小。 我不認為這會奏效

Employee.getNumEmployees();

所以也許是這樣的？

ArrayList<Employee> employees = new ArrayList();
employees.add(new Employee("Mary", "Noia", 'F' , 5 ,  24000.0));
//etc...