In Java, characters are 16-bit (unsigned) integers; they are promoted to ints
in any context that expects one.  Here's the ASCII (American Standard Code for
Information Interchange table, which encodes 128 characters (95 of which are
printable).

int     char              int      char          int    char
-------------------------------------------------------------
1-31    not printable     63       ?             96     `
32      space             64       @             97     a
33      !                 65       A             98     b
34      "                 66       B             99     c
35      #                 67       C             100    d
36      $                 68       D             101    e
37      %                 69       E             102    f
38      &                 70       F             103    g
39      '                 71       G             104    h
40      (                 72       H             105    i
41      )                 73       I             106    j
42      *                 74       J             107    k
43      +                 75       K             108    l
44      ,                 76       L             109    m
45      -                 77       M             110    n
46      .                 78       N             111    o
47      /                 79       O             112    p
48      0                 80       P             113    q
49      1                 81       Q             114    r
50      2                 82       R             115    s
51      3                 83       S             116    t
52      4                 84       T             117    u
53      5                 85       U             118    v
54      6                 86       V             119    w
55      7                 87       W             120    x
56      8                 88       X             121    y
57      9                 89       Y             122    z
58      :                 90       Z             123    {
59      ;                 91       [             124    |
60      <                 92       \             125    }
61      =                 93       ]             126    ~
62      >                 94       ^             127    non-printable
                          95       _
