使用Integer.valueOf就可以直接将char类型的数据转为十进制数据表现形式.
int value=Integer.valueOf(‘1‘);//49
int value=Integer.valueOf(‘a‘);//97
如下所示:
|
Bin
|
Dec
|
Hex
|
缩写/字符
|
解释
|
|
|
0000 0000
|
0
|
00
|
NUL(null)
|
空字符
|
|
|
0000 0001
|
1
|
01
|
SOH(start of headline)
|
标题开始
|
|
|
0000 0010
|
2
|
02
|
STX (start of text)
|
正文开始
|
|
|
0000 0011
|
3
|
03
|
ETX (end of text)
|
正文结束
|
|
|
0000 0100
|
4
|
04
|
EOT (end of transmission)
|
传输结束
|
|
|
0000 0101
|
5
|
05
|
ENQ (enquiry)
|
请求
|
|
|
0000 0110
|
6
|
06
|
ACK (acknowledge)
|
收到通知
|
|
|
0000 0111
|
7
|
07
|
BEL (bell)
|
响铃
|
|
|
0000 1000
|
8
|
08
|
BS (backspace)
|
退格
|
|
|
0000 1001
|
9
|
09
|
HT (horizontal tab)
|
水平制表符
|
|
|
0000 1010
|
10
|
0A
|
LF (NL line feed, new line)
|
换行键
|
|
|
0000 1011
|
11
|
0B
|
VT (vertical tab)
|
垂直制表符
|
|
|
0000 1100
|
12
|
0C
|
FF (NP form feed, new page)
|
换页键
|
|
|
0000 1101
|
13
|
0D
|
CR (carriage return)
|
回车键
|
|
|
0000 1110
|
14
|
0E
|
SO (shift out)
|
不用切换
|
|
|
0000 1111
|
15
|
0F
|
SI (shift in)
|
启用切换
|
|
|
0001 0000
|
16
|
10
|
DLE (data link escape)
|
数据链路转义
|
|
|
0001 0001
|
17
|
11
|
DC1 (device control 1)
|
设备控制1
|
|
|
0001 0010
|
18
|
12
|
DC2 (device control 2)
|
设备控制2
|
|
|
0001 0011
|
19
|
13
|
DC3 (device control 3)
|
设备控制3
|
|
|
0001 0100
|
20
|
14
|
DC4 (device control 4)
|
设备控制4
|
|
|
0001 0101
|
21
|
15
|
NAK (negative acknowledge)
|
拒绝接收
|
|
|
0001 0110
|
22
|
16
|
SYN (synchronous idle)
|
同步空闲
|
|
|
0001 0111
|
23
|
17
|
ETB (end of trans. block)
|
传输块结束
|
|
|
0001 1000
|
24
|
18
|
CAN (cancel)
|
取消
|
|
|
0001 1001
|
25
|
19
|
EM (end of medium)
|
介质中断
|
|
|
0001 1010
|
26
|
1A
|
SUB (substitute)
|
替补
|
|
|
0001 1011
|
27
|
1B
|
ESC (escape)
|
换码(溢出)
|
|
|
0001 1100
|
28
|
1C
|
FS (file separator)
|
文件分割符
|
|
|
0001 1101
|
29
|
1D
|
GS (group separator)
|
分组符
|
|
|
0001 1110
|
30
|
1E
|
RS (record separator)
|
记录分离符
|
|
|
0001 1111
|
31
|
1F
|
US (unit separator)
|
单元分隔符
|
|
|
0010 0000
|
32
|
20
|
(space)
|
空格
|
|
|
0010 0001
|
33
|
21
|
!
|
||
|
0010 0010
|
34
|
22
|
"
|
||
|
0010 0011
|
35
|
23
|
#
|
||
|
0010 0100
|
36
|
24
|
$
|
||
|
0010 0101
|
37
|
25
|
%
|
||
|
0010 0110
|
38
|
26
|
&
|
||
|
0010 0111
|
39
|
27
|
‘
|
||
|
0010 1000
|
40
|
28
|
(
|
||
|
0010 1001
|
41
|
29
|
)
|
||
|
0010 1010
|
42
|
2A
|
*
|
||
|
0010 1011
|
43
|
2B
|
+
|
||
|
0010 1100
|
44
|
2C
|
,
|
||
|
0010 1101
|
45
|
2D
|
-
|
||
|
0010 1110
|
46
|
2E
|
.
|
||
|
00101111
|
47
|
2F
|
/
|
||
|
00110000
|
48
|
30
|
0
|
||
|
00110001
|
49
|
31
|
1
|
||
|
00110010
|
50
|
32
|
2
|
||
|
00110011
|
51
|
33
|
3
|
||
|
00110100
|
52
|
34
|
4
|
||
|
00110101
|
53
|
35
|
5
|
||
|
00110110
|
54
|
36
|
6
|
||
|
00110111
|
55
|
37
|
7
|
||
|
00111000
|
56
|
38
|
8
|
||
|
00111001
|
57
|
39
|
9
|
||
|
00111010
|
58
|
3A
|
:
|
||
|
00111011
|
59
|
3B
|
;
|
||
|
00111100
|
60
|
3C
|
<
|
||
|
00111101
|
61
|
3D
|
=
|
||
|
00111110
|
62
|
3E
|
>
|
||
|
00111111
|
63
|
3F
|
?
|
||
|
01000000
|
64
|
40
|
@
|
||
|
01000001
|
65
|
41
|
A
|
||
|
01000010
|
66
|
42
|
B
|
||
|
01000011
|
67
|
43
|
C
|
||
|
01000100
|
68
|
44
|
D
|
||
|
01000101
|
69
|
45
|
E
|
||
|
01000110
|
70
|
46
|
F
|
||
|
01000111
|
71
|
47
|
G
|
||
|
01001000
|
72
|
48
|
H
|
||
|
01001001
|
73
|
49
|
I
|
||
|
01001010
|
74
|
4A
|
J
|
||
|
01001011
|
75
|
4B
|
K
|
||
|
01001100
|
76
|
4C
|
L
|
||
|
01001101
|
77
|
4D
|
M
|
||
|
01001110
|
78
|
4E
|
N
|
||
|
01001111
|
79
|
4F
|
O
|
||
|
01010000
|
80
|
50
|
P
|
||
|
01010001
|
81
|
51
|
Q
|
||
|
01010010
|
82
|
52
|
R
|
||
|
01010011
|
83
|
53
|
S
|
||
|
01010100
|
84
|
54
|
T
|
||
|
01010101
|
85
|
55
|
U
|
||
|
01010110
|
86
|
56
|
V
|
||
|
01010111
|
87
|
57
|
W
|
||
|
01011000
|
88
|
58
|
X
|
||
|
01011001
|
89
|
59
|
Y
|
||
|
01011010
|
90
|
5A
|
Z
|
||
|
01011011
|
91
|
5B
|
[
|
||
|
01011100
|
92
|
5C
|
\
|
||
|
01011101
|
93
|
5D
|
]
|
||
|
01011110
|
94
|
5E
|
^
|
||
|
01011111
|
95
|
5F
|
_
|
||
|
01100000
|
96
|
60
|
`
|
||
|
01100001
|
97
|
61
|
a
|
||
|
01100010
|
98
|
62
|
b
|
||
|
01100011
|
99
|
63
|
c
|
||
|
01100100
|
100
|
64
|
d
|
||
|
01100101
|
101
|
65
|
e
|
||
|
01100110
|
102
|
66
|
f
|
||
|
01100111
|
103
|
67
|
g
|
||
|
01101000
|
104
|
68
|
h
|
||
|
01101001
|
105
|
69
|
i
|
||
|
01101010
|
106
|
6A
|
j
|
||
|
01101011
|
107
|
6B
|
k
|
||
|
01101100
|
108
|
6C
|
l
|
||
|
01101101
|
109
|
6D
|
m
|
||
|
01101110
|
110
|
6E
|
n
|
||
|
01101111
|
111
|
6F
|
o
|
||
|
01110000
|
112
|
70
|
p
|
||
|
01110001
|
113
|
71
|
q
|
||
|
01110010
|
114
|
72
|
r
|
||
|
01110011
|
115
|
73
|
s
|
||
|
01110100
|
116
|
74
|
t
|
||
|
01110101
|
117
|
75
|
u
|
||
|
01110110
|
118
|
76
|
v
|
||
|
01110111
|
119
|
77
|
w
|
||
|
01111000
|
120
|
78
|
x
|
||
|
01111001
|
121
|
79
|
y
|
||
|
01111010
|
122
|
7A
|
z
|
||
|
01111011
|
123
|
7B
|
{
|
||
|
01111100
|
124
|
7C
|
|
|
||
|
01111101
|
125
|
7D
|
}
|
||
|
01111110
|
126
|
7E
|
~
|
||
|
01111111
|
127
|
7F
|
DEL (delete)
|
删除
|
|
如何用java获得字符串的ASCII值,布布扣,bubuko.com
原文：http://www.cnblogs.com/amosli/p/3832817.html