Java assignment - This is the second class code for a personal lending library. I am getting errors on the scanner. Do I need to have the import java.util.Scanner with the library class as well as the main code?

Here is the code for the second class.

public class Library {

static Scanner in = new Scanner(System.in); //instantiation

MediaItem t = new MediaItem();

MediaItem[] items = new MediaItem[100];

String[] str = new String[100];

int numberOfItems = 0; //fields

int check = 0;

int called = 0;

int displayMenu(){ //methods

System.out.println("1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit");

System.out.print("What would you like to do? ");

int a = in.nextInt();

return a;

}

void addNewItem(String title, String format){

MediaItem item = new MediaItem(title, format);

items[numberOfItems] = item;

numberOfItems++;

}

void markItemOnLoan(String title, String name, String date){

for(int b = 0; b < numberOfItems; b++){

if(title.equals(items[b].title)){

items[b].markOnLoan(name, date);

called = 1;

}

}

if(called == 0)

System.out.println(title + " doesn't exist");

called = 0;

}

void listAllItems(){

for(int c = 0; c < numberOfItems; c++){

if (items[c].onLoan)

str[c] = " " + items[c].title + " " + items[c].format + " loaned to " + items[c].loanedTo + " on " + items[c].dateLoaned;

else

str[c] = " " + items[c].title + " " + items[c].format;

System.out.println(str[c] + " ");

}

}

void markItemReturned(String title){

for(int b = 0; b < numberOfItems; b++){

if(title.equals(items[b].title)){

items[b].markReturned();

check = 1;

}

}

if(check == 0)

System.out.println("Sorry, I couldn't find " + title + " in the library.");

check = 0;

}

}