Java 方法不会重写或实现超类型中的方法

Java 方法不会重写或实现超类型中的方法,java,inheritance,overriding,abstract,Java,Inheritance,Overriding,Abstract,我正在使用继承和多态性创建一个模拟员工数据库。在尝试重写超类方法时,我遇到了以下错误 HourlyEmployee is not abstract and does not override abstract method resetWeek() in Employee public class HourlyEmployee extends Employee ^ HourlyEmployee.java:43: error: method does not override or imple

我正在使用继承和多态性创建一个模拟员工数据库。在尝试重写超类方法时,我遇到了以下错误

HourlyEmployee is not abstract and does not override abstract method resetWeek() in Employee
public class HourlyEmployee extends Employee
   ^
HourlyEmployee.java:43: error: method does not override or implement a method from a supertype
@Override
^
HourlyEmployee.java:54: error: method does not override or implement a method from a supertype
@Override
^
HourlyEmployee.java:60: error: method does not override or implement a method from a supertype
@Override
^
HourlyEmployee.java:66: error: method does not override or implement a method from a supertype
@Override
这是我的Employee超类和HourlyEmployee子类代码

public abstract class Employee
{
protected String firstName;
protected String lastName;
protected char middleInitial;
protected boolean fulltime;
private char gender;
private int employeeNum;

public Employee (String fn, String ln, char m, char g, int empNum, boolean ft)
{
    firstName = fn;
    lastName = ln;
    middleInitial = m;
    gender = g;
    employeeNum = empNum;
    fulltime = ft;
}

public int getEmployeeNumber()
{
    return employeeNum;
}

public void setEmployeeNumber(int empNum)
{
    while (empNum <= 10000 && empNum >= 99999)
    {
        System.out.print ("Invalid input, please try again: ");
    }

    if (empNum >= 10000 && empNum <= 99999)
    {
        employeeNum = empNum;
    }
}

public String getFirstName()
{
    return firstName;
}

public String getLastName()
{
    return lastName;
}

public char checkGender(char g)
{
    if (g != 'M' || g != 'F')
    {
        g = 'F';
    }
    return g;
}

public char getGender()
{
    return gender;
}


@Override
public boolean equals(Object e2)
{
    if (this.employeeNum == ((Employee)e2).employeeNum)
    {
        return true;
    }
    else
    {
        return false;
    }
}

@Override
public String toString()
{
    return employeeNum + "\n" + lastName + ", " + firstName + "\n" + "Gender:" + gender + "\n" + "Status:" + fulltime + "\n";
}

public abstract double caclulateWeeklyPay();

public abstract void annualRaise();

public abstract double holidayBonus();

public abstract void resetWeek();
}
公共抽象类Employee
{
受保护的字符串名;
受保护的字符串lastName;
受保护字符首字母;
全职工作;
私人性别;
私人国际雇员;
公共雇员(字符串fn、字符串ln、字符m、字符g、int empNum、布尔ft)
{
firstName=fn;
lastName=ln;
中间初始值=m;
性别=g;
employeeNum=empNum;
全职=英尺;
}
public int getEmployeeNumber()
{
返回雇员;
}
public void setEmployeeNumber(int empNum)
{
而(empNum=99999)
{
System.out.print(“输入无效,请重试:”);
}
如果(empNum>=10000&&empNum 40)
{
w=w*2;
}
返回w*h;
}
//@凌驾
公共双年度加薪(双w)
{
返回值(w*.0.05)+w;
}
//@凌驾
公共双倍度假奖金(双倍w)
{
返回w*40;
}
//@凌驾
公共双周(双倍小时)
{
h=0.0;
返回h;
}
公共双脉冲工作(双h,双A)
{

而(h您的Employee类有4个抽象方法,没有一个实现(至少没有正确实现)。下面是一个示例:

double caclulateWeeklyPay(); // in Employee
double calculateWeeklyPay(double w, double h) // in HourlyEmployee
父类应包含相同的签名(包括参数),并且应如下所示:

public abstract double calculateWeeklyPay(double w, double h);

由于这似乎是家庭作业,我将把其余的留给您。

请仔细阅读错误消息:

HourlyEmployee不是抽象的,并且不重写Employee中的抽象方法resetWeek()

它清楚地表明您的
Employee
类是
abstract
,并且有一个抽象方法
resetWeek()

Employee
扩展而来的类
HourlyEmployee
不是抽象的,因此它应该覆盖超类的所有抽象方法,因为具体类不能有任何抽象方法


原因是
HourlyEmployee
类中的方法与超类中的方法具有不同的签名。因此该方法不会被重写,并且编译器不接受
@Override
注释,因为HourlyEmployee*类不是抽象的*您需要实现abst在EMPLOYEE抽象类中声明的ract方法。这一点非常明显。 您必须实现以下方法

 public abstract double caclulateWeeklyPay();

 public abstract void annualRaise();

 public abstract double holidayBonus();

 public abstract void resetWeek(); 
 public abstract double caclulateWeeklyPay();

 public abstract void annualRaise();

 public abstract double holidayBonus();

 public abstract void resetWeek();