package javaapplication1;
public class JavaApplication1 {
public static void main(String[] args) {
try {
System.out.printf("%1$-8s %2$-10s %3$s\n", "Decimal", "ASCII", "Hex");
for (int i = 0; i < 128; i++) {
char ch = (char) i;
String show = "";
if (Character.isWhitespace(ch)) {
switch (ch) {
case '\n':
show = "\\n";
break;
case '\r':
show = "\\r";
break;
case '\t':
show = "\\t";
break;
case '\f':
show = "\\f";
break;
case ' ':
show = "space";
break;
default:
show = "whitespace";
break;
}
} else if (Character.isISOControl(ch)) {
show = "ctrl code";
} else {
show = Character.toString(ch);
}
System.out.printf("%1$-8d %2$-10s %3$s\n", i, show, Integer.toHexString(i));
}
} catch (Exception e) {
System.out.print(e.toString());
}
}
}
/*
run:
Decimal ASCII Hex
0 ctrl code 0
1 ctrl code 1
2 ctrl code 2
3 ctrl code 3
4 ctrl code 4
5 ctrl code 5
6 ctrl code 6
7 ctrl code 7
8 ctrl code 8
9 \t 9
10 \n a
11 whitespace b
12 \f c
13 \r d
14 ctrl code e
15 ctrl code f
16 ctrl code 10
17 ctrl code 11
18 ctrl code 12
19 ctrl code 13
20 ctrl code 14
21 ctrl code 15
22 ctrl code 16
23 ctrl code 17
24 ctrl code 18
25 ctrl code 19
26 ctrl code 1a
27 ctrl code 1b
28 whitespace 1c
29 whitespace 1d
30 whitespace 1e
31 whitespace 1f
32 space 20
33 ! 21
34 " 22
35 # 23
36 $ 24
37 % 25
38 & 26
39 ' 27
40 ( 28
41 ) 29
42 * 2a
43 + 2b
44 , 2c
45 - 2d
46 . 2e
47 / 2f
48 0 30
49 1 31
50 2 32
51 3 33
52 4 34
53 5 35
54 6 36
55 7 37
56 8 38
57 9 39
58 : 3a
59 ; 3b
60 < 3c
61 = 3d
62 > 3e
63 ? 3f
64 @ 40
65 A 41
66 B 42
67 C 43
68 D 44
69 E 45
70 F 46
71 G 47
72 H 48
73 I 49
74 J 4a
75 K 4b
76 L 4c
77 M 4d
78 N 4e
79 O 4f
80 P 50
81 Q 51
82 R 52
83 S 53
84 T 54
85 U 55
86 V 56
87 W 57
88 X 58
89 Y 59
90 Z 5a
91 [ 5b
92 \ 5c
93 ] 5d
94 ^ 5e
95 _ 5f
96 ` 60
97 a 61
98 b 62
99 c 63
100 d 64
101 e 65
102 f 66
103 g 67
104 h 68
105 i 69
106 j 6a
107 k 6b
108 l 6c
109 m 6d
110 n 6e
111 o 6f
112 p 70
113 q 71
114 r 72
115 s 73
116 t 74
117 u 75
118 v 76
119 w 77
120 x 78
121 y 79
122 z 7a
123 { 7b
124 | 7c
125 } 7d
126 ~ 7e
127 ctrl code 7f
*/
