Java File into ArrayList and referencing the ArrayList to another class -

so have been coding project in java , have come across pause while trying reference array list class. first bit of code class trying reference arraylist too. second creating arraylists.

import game.app;  public class wordpuzzlegenerator {      public wordpuzzlegenerator() {         if (game.sizeofpuzzle.currentrows == 4){             threeletterwordlist         }else if (game.sizeofpuzzle.currentrows == 5){             maximum = 12482;         }else{             maximum = 1310;         }     } 

---

    scanner threeletterscanner = new scanner(file("3letterwords.txt"));     arraylist<string> threeletterwordlist = new arraylist<string>();     while (threeletterscanner.hasnext()){         threeletterwordlist.add(threeletterscanner.next());     }     threeletterscanner.close();      scanner fourletterscanner = new scanner(file("4letterwords.txt"));     arraylist<string> fourletterwordlist = new arraylist<string>();     while (fourletterscanner.hasnext()){         fourletterwordlist.add(fourletterscanner.next());     }     fourletterscanner.close();      scanner fiveletterscanner = new scanner(file("5letterwords.txt"));     arraylist<string> fiveletterwordlist = new arraylist<string>();     while (fiveletterscanner.hasnext()){         fiveletterwordlist.add(fiveletterscanner.next());     }     fiveletterscanner.close(); } 

use variable inside class like:

public class wordpuzzlegenerator {      arraylist<string> threeletterwordlist = new arraylist<string>();     //...     public list<string> getthreeletterwordlist() {        return threeletterwordlist ;     } } 

then can call mygenerator.getthreeletterwordlist(); list.