对象赋值时空指针异常:Exception in thread 'main' java.lang.NullPointerException: Cannot invoke 'src.com.simonf.Employee.setName(String)' because 'employees[i]' is null at src.com.simonf.test1.main(test1.java:11）

代码：

public class test1 {
    public static void main(String[] args) {
        Employee[] employees = new Employee[3];
        System.out.println("-----------------" + "添加第1个员工" + "--------");
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < 3; i++) {
            int[] arr = new int[3];
            employees[i].setName(sc.next());
            employees[i].setGender(sc.next().charAt(0));
            employees[i].setAge(sc.nextInt());
            employees[i].setSalary(sc.nextDouble());
            employees[i].setPhoneNumber(sc.next());
            employees[i].setEmail(sc.next());
        }
        System.out.println("--------------"+"添加完成"+"--------");
        System.out.println("--------------"+"员工列表"+"--------");
        for (int i = 0; i < 3; i++) {
            System.out.println(employees[i].toString());
            System.out.println("--------------------------------");
        }
        System.out.println("--------------"+"员工列表完成"+"--------");
    }
}

张三(控制台输入)
报错：

1	Exception in thread "main" java.lang.NullPointerException: Cannot invoke "src.com.simonf.Employee.setName(String)" because "employees[i]" is null at src.com.simonf.test1.main(test1.java:11）

这段代码报错的原因是在循环中没有为 employees[i] 分配内存空间，导致其为 null。因此，在使用 employees[i] 的方法时会出现NullPointerException。

要解决这个问题，你需要为 employees[i] 分配内存空间，即创建 Employee 对象并将其赋值给 employees[i]。可以在循环之前为每个employees[i] 创建一个新的 Employee 对象，如下所示：

for (int i = 0; i < 3; i++) {  
        employees[i] = new Employee(); // 创建新的 Employee 对象  
        employees[i].setName(sc.next());  
        employees[i].setGender(sc.next().charAt(0));  
        employees[i].setAge(sc.nextInt());  
        employees[i].setSalary(sc.nextDouble());  
        employees[i].setPhoneNumber(sc.next());  
        employees[i].setEmail(sc.next());  
    }