菜鸟求救

我在做义个有关于继承的联系，但是编译器提示找不到符号，代码如下：
import java. util.*;

public class ManagerTest{
    public static void main(String[] args){
        Manager boss=new Manager("carl",80000,1987,6,4);
        boss.setBonus(50000);

        Employee[] staff=new Employee[3];

        Staff[0]=boss;
        staff[1]=new Employee("jiangxudong",70000,1989,3,15);
        staff[2]=new Employee("kok",60000,1990,5,4);

        for (Employee e:staff)
            System.out.println("name="+e.getName()+" salary="+e.getSalary()+" hireday="+e.gethireDay());
    }
}

class Employee{
    public Employee(String n,double s,int year,int month,int day){
        name=n;
        salary=s;
        GregorianCalendar calendar=new GregorianCalendar(year,month-1,day);
        hireday=calendar.getTime();
    }

    public String getName(){
        return name;
    }

    public double getSalary(){
        return salary;
    }
    
    public Date gethireDay(){
        return (Date)hireday.clone();
    }

    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 getSalary(){
        double basesalary=super.getsalary();
        return salary=basesalary+bouns;
    }

    public void setBonus(double b){
        bonus=b;
    }
    
    private double bonus;
}
----------------解决方案--------------------------------------------------------
编译器找不到Manager和Employee
----------------解决方案--------------------------------------------------------
import java. util.*;

public class ManagerTest{
    public static void main(String[] args){
        Manager boss=new Manager("carl",80000,1987,6,4);
        boss.setBonus(50000);

        Employee[] staff=new Employee[3];

        staff[0]=boss;
        staff[1]=new Employee("jiangxudong",70000,1989,3,15);
        staff[2]=new Employee("kok",60000,1990,5,4);
        for (int i=0;i<3;i++)
            System.out.println("name="+staff[i].getName()+" salary="+staff[i].getSalary()
            +" hireday="+staff[i].gethireDay());
    }
}

class Employee{
    public Employee(String n,double s,int year,int month,int day){
        name=n;
        salary=s;
        GregorianCalendar calendar=new GregorianCalendar(year,month-1,day);
        hireday=calendar.getTime();
    }

    public String getName(){
        return name;
    }

    public double getSalary(){
        return salary;
    }
   
    public Date gethireDay(){
        return (Date)hireday.clone();
    }

    private String name;
    public double salary;
    private Date hireday;
}

class Manager extends Employee{

    private double bonus;
    public Manager(String n,double s,int year,int month,int day){
        super(n,s,year,month,day);
         bonus=0;
    }

    public double getSalary(){
        double basesalary=super.getSalary();
        return salary=basesalary+bonus;
    }

    public void setBonus(double b){
        bonus=b;
    }
   
   
}
----------------解决方案--------------------------------------------------------
能运行了,还有点问题,就是没有计算雇佣日期,你自己改一下.我也有问题, for (Employee e:staff)
这是什么意思?
----------------解决方案--------------------------------------------------------
for (Employee e:staff)在这里就相当于for(int i=0;i<3;i++)
是ＪＤＫ５.０新增加的一个循环结构:for (variable:collection)
类似于＂for each"
----------------解决方案--------------------------------------------------------
我又重新写了个简化版的，去掉了hireday,其他的和上边一样，这回不提示找不到Employee了，但是Manager还是找不到，邪门了．．．
不就是一个自定义的类吗，怎么就找不到？
----------------解决方案--------------------------------------------------------
不会啊,我的都能运行啊.而且我用的比较老啊.
----------------解决方案--------------------------------------------------------
是啊，所以我说邪门了。重新COPY到另外一个地方，编译器也是说找不到Manager，但是不提示找不到Employee。。。。
----------------解决方案--------------------------------------------------------
你用记事本加控制台吧.有的时候可能是编译器的问题.你最好把错发出来给别人看看啊.再有问题我也不知道了
----------------解决方案--------------------------------------------------------
提示错误：
ManagerTest.java5:找不到符号
符号：类Manager
位置：类ManagerTest
                                   Manager boss=new Manager("carl",80000,1987,6,4);
                                   ^

                                     Manager boss=new Manager("carl",80000,1987,6,4);
                                                                           ^
.....
----------------解决方案--------------------------------------------------------