Javajava.lang.NullPointerException问题

Question

import java.util.*;
public class Student
{
String name;
}

class Course
{
Student[] stu = new Student[3];
Scanner scan = new Scanner(System.in);
for(int i = 0; i < stu.length; i++)
{
stu[i].name = scan.next;
}
}

为什么stu[i].name = scan.next;这一句会报错，无法将从键盘接收到的字符串保存到stu这个
数组中

Answer 1

stu[i] = new Student();
stu[i].name = scan.next;