public static void addStudent(ArrayList<Student> array) {
Scanner sc = new Scanner(System.in);
String sid;
while (true) {
System.out.println("请输入学生学号:");
sid = sc.nextLine();
boolean flag = isUsed(array, sid);
if (flag) {
System.out.println("您输入的学号已被使用,请重新输入");
} else {
break;
}
}
System.out.println("请输入学生姓名:");
String name = sc.nextLine();
System.out.println("请输入学生年龄:");
String age = sc.nextLine();
System.out.println("请输入学生居住地:");
String address = sc.nextLine();
Student s = new Student();
s.setSid(sid);
s.setName(name);
s.setAge(age);
s.setAddress(address);
array.add(s);
System.out.println("添加学生成功");
}
public static boolean isUsed(ArrayList<Student> array, String sid) {
boolean flag = false;
for (int i = 0; i < array.size(); i++) {
Student s = array.get(i);
if (s.getSid().equals(sid)) {
flag = true;
break;
}
}
return flag;
}