Need help in store many strings under same instance.

Question

i making a student system.
when user enter new pin , he will ask to enter his subject code and his grade, the system will keep asking him for more code or he can enter 0 to enter other people data. the System exit when the person type "EXIT" , we will print out what he had stored.
<<sample below>>
Enter pin number(EXIT to print out) : 1234
Enter subject code( "0" to add more pin number) : abc
Enter grade : A
Enter subject code( "0" to add more pin number) : bcd
Enter grade : F
Enter subject code( "0" to add more pin number) : 0
Enter pin number(EXIT to print out) : 2456
Enter subject code( "0" to add more pin number) : ggg
Enter grade : C
Enter subject code( "0" to add more pin number) : fff
Enter grade : B
Enter subject code( "0" to add more pin number) : 0
Enter pin number(EXIT to print out) : EXIT
student 1234 take abc gradeA and bcd gradeF
student 2456 take ggg gradeC and fff gradeB
i can use a counter to count how many pin number been entered. 1 pin number represent 1 student.
use pinNumber[count] to store each pin
but my main problem is how do store those subject codes together for each pin number?
anyone can show me how my skeleton of program like?

Answer 1

is it possible to create a class student and inside we create a vector just to store all courses enter ...
then we can make many instance of class student.?
but if we had vector in the class student, how to access it? or even add elements to the vector?
class student{
public string name
vector coursecodes = new vector(); //to store more than1 coursecode
public static void main(String[] args)throws IOException
student student1 = new student();
student student2 = new student();
student student3 = new student();
// how to add elements to vector of each instances of student class
//how to access coursecodes for each student1, student2, student3???
}