Untitled

if(tOut.get("" + i + ":" + j) != null && tOut.get("" + i + ":" + j).equals("INVALID")) {
                    System.out.println("Error: Invalid token at " + i + ":" + j);
                }
                else {
                    System.out.println(tOut.get("" + i + ":" + j)  + " " + i + ":" + j);
                }