Big endian format Conversion

Dataconverterbe.java01/**
02 * Data Format conversion (byte => short int long float double)
* Big endian storage mode
* PACKAGE:cma.common.dataio
Description:big Endian data Format conversion
* MODIFIER: Liu Zejun
* email:bj0773@gmail.com
* date:2007-05-04 00:56:01
Update:
Ten * Reference:jxutil.sourceforge.net
11 */
12
13 PackageCma.common.dataio;
14
15 ImportJava.math.BigInteger;
16
17 Public classDataconverterbe {
Dataconverterbe () {
19}
20
21st Public StaticString Gethex ( byte[] buf) {
22 returnGethex (buf, 0, 2);
23}
24 Public StaticString Gethex ( byte[] buf, intIndex) {
25 returnGethex (buf, index, 2);
26}
27 Public Static ShortGetshort ( byte[] buf) {//2 bytes
28 returnGetshort (buf, 0);
29}
30 Public Static intGetInt ( byte[] buf) {//4 bytes
31 returnGetInt (buf, 0);
32}
33 Public Static LongGetlong ( byte[] buf) {//8 bytes
34 returnGetlong (buf, 0);
35}
36 Public Static floatGetFloat ( byte[] buf) {//4 bytes
37 returnGetFloat (buf, 0);
38}
39 Public Static DoubleGetDouble ( byte[] buf) {//8 bytes
40 returnGetDouble (buf, 0);
41}
42
43 Public StaticString Gethex ( byte[] buf, intOfs intLen) {
The String hexstr = "0123456789ABCDEF";
StringBuffer bufstr = NewStringBuffer ();
46 for( inti=0;i<len;i++) {
Bufstr.append (Hexstr.charat (Buf[ofs + i] >> 4) & 0xf);
Bufstr.append (Hexstr.charat (Buf[ofs + i) & 0xf));
49}
50 return(Bufstr.tostring ());
51}
52 Public Static ShortGetshort ( byte[] buf, intOFS) {
53 return( Short) (
((Buf[ofs] & 0xFF) << 8)
+ ((Buf[ofs + 1] & 0xFF))
56);
57}
58 Public Static intGetInt ( byte[] buf, intOFS) {
59 return(
((Buf[ofs] & 0xFF) << 24)
+ ((Buf[ofs + 1] & 0xFF) << 16)
+ ((Buf[ofs + 2] & 0xFF) << 8)
+ ((Buf[ofs + 3] & 0xFF))
64);
65}
66 Public Static LongGetlong ( byte[] buf, intOFS) {
67 return(
68 (( Long) Buf[ofs] & 0xFF) << 56)
69 + (( Long) Buf[ofs + 1] & 0xFF) << 48)
70 + (( Long) Buf[ofs + 2] & 0xFF) << 40)
71 + (( Long) Buf[ofs + 3] & 0xFF) << 32)
72 + (( Long) Buf[ofs + 4] & 0xFF) << 24)
73 + (( Long) Buf[ofs + 5] & 0xFF) << 16)
74 + (( Long) Buf[ofs + 6] & 0xFF) << 8)
75 + (( Long) Buf[ofs + 7] & 0xFF)
76);
77}
78 Public Static floatGetFloat ( byte[] buf, intOFS) {
79 returnFloat.intbitstofloat (GetInt (buf, OFS));
80}
81 Public Static DoubleGetDouble ( byte[] buf, intOFS) {
82 returnDouble.longbitstodouble (Getlong (buf, OFS));
83}
84
85}