|--------------+---------------+------------------------------------------------|
| next()       | hasNext()     | is there another token to read?                |
|--------------+---------------+------------------------------------------------|
| nextLine()   | hasNextLine() | is there another line to read?                 |
|--------------+---------------+------------------------------------------------|
| nextInt()    | hasNextInt()  | is there another token to read                 |
|              |               | and can the next token be treated as an int?   |
|--------------+---------------+------------------------------------------------|
| nextDouble() | hasNextDouble | is there another token to read                 |
|              |               | and can the next token be treated as a double? |
|--------------+---------------+------------------------------------------------|