子類重寫父類方法，為什么 boss.getSalary();呼叫的是父類的getSalary，而不是Manager類的？求問怎么改可以呼叫子類的getSalary方法？
public class ManagerTest
{
public static void main(String[] args)
{
Manager boss = new Manager("Carl Cracker",80000,1987,12,15);
boss.setBonus(5000);
boss.getSalary();
Employee[] staff = new Employee[3];
staff[0] = boss;
staff[1] = new Employee("Harry Hacker",50000,1989,10,1);
staff[2] = new Employee("Tommy Tester",40000,1990,3,15);
for(Employee e : staff)
System.out.println("name=" + e.getName()+",Salary=" + e.getSalary());
}
}
class Employee
{
public Employee(String n,double s,int year,int mouth,int day)
{
name = n;
salary = s;
GregorianCalendar calendar = new GregorianCalendar(year,mouth-1,day);
hireDay = calendar.getTime();
}
public String getName()
{
return name;
}
public double getSalary()
{
return salary;
}
public Date getHireDay()
{
return hireDay;
}
public void raiseSalary(double byPercent)
{
double raise = salary * byPercent/100;
salary += raise;
}
private String name;
private double salary;
private Date hireDay;
}
class Manager extends Employee
{
public Manager(String n,double s,int year,int month,int day)
{
super(n,s,year,month,day);
bonus = 0;
}
public double gerSalary()
{
System.out.println("***********");
double baseSalary = super.getSalary();
return baseSalary + bonus;
}
public void setBonus(double b)
{
bonus = b;
}
private double bonus;
}
uj5u.com熱心網友回復：
恩，重寫的語法我相信你已經懂了。你的子類是gerSalary() ，父類是getSalary()；拼寫錯誤，自然沒有重寫uj5u.com熱心網友回復：
LS視力不錯
uj5u.com熱心網友回復：
最近在學靜態塊求各位大佬解答，就是：子類中的靜態塊，是不是只能呼叫父類的靜態方法，我試了一下發現無法呼叫父類的普通方法。uj5u.com熱心網友回復：
你先要搞明白類的載入順序，當靜態塊載入時，普通方法還沒載入，所以呼叫不了。
uj5u.com熱心網友回復：
這種低級錯誤完全可以靠加上@Override注解避免uj5u.com熱心網友回復：
靜態方法隨著類的加載而加載。
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標籤：Eclipse