求助Exception in thread "main" java.lang.NullPointerException错误解决

dlnb526

1. ///CoreJAVA 4-2
   
2. 
   
3. import java.time.*;
   
4. 
   
5. public class EmployeeTest
   
6. {
   
7.     public static void main(String[] args)
   
8.     {
   
9.         Employee[] staff = new Employee[3];
   
10. 
    
11.         staff[0] = new Employee("Carl Cracker",75000,1987,12,15);
    
12.         staff[1] = new Employee("Harry Havker",50000,1989,10,1);
    
13. 
    
14.         for(Employee e:staff)
    
15.             e.raiseSalary(5);
    
16.         for(Employee e:staff)
    
17.             System.out.println("name="+e.getName()+",salary="+e.getSalary()+",hireDay="+e.getHireDay());
    
18. 
    
19.     }
    
20. }
    
21. 
    
22. class Employee
    
23. {
    
24.     private String name;
    
25.     private double salary;
    
26.     private LocalDate hireDay;
    
27. 
    
28.     public Employee(String n,double s,int year,int month,int day)
    
29.     {
    
30.         name = n;
    
31.         salary = s;
    
32.         hireDay = LocalDate.of(year, month, day);
    
33. 
    
34.     }
    
35.     public String getName()
    
36.     {
    
37.         return name;
    
38.     }
    
39.     public double getSalary()
    
40.     {
    
41.         return salary;
    
42. 
    
43.     }
    
44.     public LocalDate getHireDay()
    
45.     {
    
46.         return hireDay;
    
47. 
    
48.     }
    
49.     public void raiseSalary(double byPercent)
    
50.     {
    
51.         double raise = salary*byPercent/100;
    
52.         salary += raise;
    
53.     }
    
54. }
    

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错误如下

1. Exception in thread "main" java.lang.NullPointerException
   
2.         at EmployeeTest.main(EmployeeTest.java:15)

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就是这里：

1.   for(Employee e:staff)
   
2.             e.raiseSalary(5);

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可是没有需要赋值的地方了啊~~求各位大佬帮助

dlnb526

知道问题在哪了，少了一组数据