我正在尝试编写一个简单的工资单系统程序。我在super(employee_1);方法中遇到HourlyEmployee(HourlyEmployee employee_1)问题。我得到的原因是“实际和正式的论点长度不同。但是，当我更改参数以包含所有内容时，我在行main class(payrollSystem_1)的{{1}}中收到错误，它表示方法应该只说HourlyEmployee employee_2 = new HourlyEmployee(employee_1);。
我只是陷入困境，无法修复HourlyEmployee(HourlyEmployee employee_1)。
PayrollSystem_1.java
super(employee_1)HourlyEmployee.java
package payrollsystem_1;
import java.util.*;
public class PayrollSystem_1 {
public static void main(String[] args) {
// TODO code application logic here
// Creating an HourlyEmployee object using the first constructor
HourlyEmployee employee_1 = new HourlyEmployee(1, "Janette", "Hernandez", null, 14.75, 30);
// Creating an HourlyEmployee object using the copy constructor
HourlyEmployee employee_2 = new HourlyEmployee(employee_1);
// Calling some of the setter methods in the HourlyEmployee class.
employee_2.setEmployeeID(2);
employee_2.setFirstName("Marcela");
employee_2.setLastName("Brown");
employee_2.setHourlyRate(25);
employee_2.setPeriodHours(40);
System.out.println("\nCalling some of the getter methods in the HourlyEmployee class...");
System.out.println( String.format("%-30s%s", "Employee ID:", employee_1.getEmployeeID()) );
System.out.println( String.format("%-30s%s", "First Name:", employee_1.getFirstName()) );
System.out.println( String.format("%-30s%s", "Last Name:", employee_1.getLastName()) );
System.out.println( String.format("%-30s%s", "Hourly Rate:", employee_1.getHourlyRate()) );
System.out.println( String.format("%-30s%s", "Period Hours:", employee_1.getPeriodHours()) );
Employee.java
public class HourlyEmployee extends Employee {
private double hourlyRate;
private double periodHours;
/**
* @param employeeID
* @param firstName
* @param lastName
* @param listOfPaychecks
* @param hourlyRate
* @param periodHours
* Constructor with parameters
*/
public HourlyEmployee( int employeeID, String firstName, String lastName, ArrayList<Paycheck> listOfPaychecks,
double hourlyRate, double periodHours) {
super(employeeID, firstName, lastName, listOfPaychecks);
this.hourlyRate = hourlyRate;
this.periodHours = periodHours;
}
/**
* @param employee_1
*
*
*/
public HourlyEmployee(HourlyEmployee employee_1) {
super(employee_1);
this.hourlyRate = employee_1.hourlyRate;
this.periodHours = employee_1.periodHours;
}
/**
* @return hourlyRate
*/
public double getHourlyRate() {
return hourlyRate;
}
/**
* @param hourlyRate
*/
public void setHourlyRate(double hourlyRate) {
this.hourlyRate = hourlyRate;
}
/**
* @return periodHours
*/
public double getPeriodHours() {
return periodHours;
}
/**
* @param periodHours
*/
public void setPeriodHours(double periodHours) {
this.periodHours = periodHours;
}
}
答案 0 :(得分：0)
当你调用super时，你的构造函数会出现问题 - super没有这样的构造函数
public HourlyEmployee(HourlyEmployee employee_1) {
super(employee_1);
this.hourlyRate = employee_1.hourlyRate;
this.periodHours = employee_1.periodHours;
}
像这样更改构造函数：
public HourlyEmployee(HourlyEmployee employee_1) {
super(employee_1.employeeID, employee_1.firstName, employee_1.lastName, employee_1.listOfPaychecks);
this.hourlyRate = employee_1.hourlyRate;
this.periodHours = employee_1.periodHours;
}
或者更好的是：
public HourlyEmployee(HourlyEmployee employee_1) {
this (employee_1.employeeID, employee_1.firstName, employee_1.lastName, employee_1.listOfPaychecks, employee_1.hourlyRate, employee_1.periodHours);
}