Conversion between Long,int,short and byte arrays in Java

The implementation of the two articles is very comprehensive inside some of the details are different, and now the project schedule is tense. Keep the finishing later.

Article One: http://hi.baidu.com/menglinxi_a/item/35a43d5d50e79212abf6d753

A long type to a byte array
public static byte[] Longtobyte (long number) {
Long temp = number;
Byte[] B = new Byte[8];
for (int i = 0; i < b.length; i++) {
B[i] = new Long (temp & 0xff). Bytevalue ()//
Save the lowest bit in the lowest bit
temp = temp >> 8; Move 8 digits to the right
}
return b;
}

The byte array is converted to long
public static long Bytetolong (byte[] b) {
Long s = 0;
Long S0 = b[0] & 0xff;//Lowest bit
Long S1 = b[1] & 0xff;
Long s2 = b[2] & 0xff;
Long s3 = b[3] & 0xff;
Long S4 = b[4] & 0xff;//Lowest bit
Long S5 = b[5] & 0xff;
Long s6 = b[6] & 0xff;
Long s7 = b[7] & 0xff;

S0, no change.
S1 <<= 8;
S2 <<= 16;
S3 <<= 24;
S4 <<= 8 * 4;
S5 <<= 8 * 5;
S6 <<= 8 * 6;
S7 <<= 8 * 7;
s = S0 | S1 | S2 | S3 | S4 | S5 | S6 | S7;
return s;
}

/**
* Note: the conversion of int to byte array.
*
* @param number
* @return
*/
public static byte[] Inttobyte (int number) {
int temp = number;
Byte[] B = new Byte[4];
for (int i = 0; i < b.length; i++) {
B[i] = new Integer (temp & 0xff). Bytevalue ()//
Save the lowest bit in the lowest bit
temp = temp >> 8; Move 8 digits to the right
}
return b;
}

/**
* Note: Conversion of byte array to int.
*
* @param b
* @return
*/
public static int Bytetoint (byte[] b) {
int s = 0;
int s0 = b[0] & 0xff;//Lowest bit
int S1 = b[1] & 0xff;
int s2 = b[2] & 0xff;
int s3 = b[3] & 0xff;
S3 <<= 24;
S2 <<= 16;
S1 <<= 8;
s = S0 | S1 | S2 | S3;
return s;
}

/**
* Note: The conversion of the short to byte array.
*
* @param s
* @return
*/
public static byte[] Shorttobyte (short number) {
int temp = number;
Byte[] B = new byte[2];
for (int i = 0; i < b.length; i++) {
B[i] = new Integer (temp & 0xff). Bytevalue ()//
Save the lowest bit in the lowest bit
temp = temp >> 8; Move 8 digits to the right
}
return b;
}

/**
* Annotation: byte array to short conversion.
*
* @param b
* @return
*/
public static short Bytetoshort (byte[] b) {
Short s = 0;
Short s0 = (short) (B[0] & 0xff);//Lowest bit
Short S1 = (short) (B[1] & 0xff);
S1 <<= 8;
s = (short) (S0 | s1);
return s;
}

Article Two:

java byte,short, int, long, etc conversion methods

public static byte[] Shorttobytes (short n) {

Byte[] B = new byte[2];

B[1] = (byte) (n & 0xff);

B[0] = (byte) ((n >> 8) & 0xff);

return b;

}

public static short Bytestoshort (byte[] b) {

Return (short) (B[1] & 0xFF

| (B[0] & 0xff) << 8);

}

/**

* int type convert to byte[]

*

* @param num

* Number of INT

* @return byte[]

*/

public static byte[] inttobytes (int num) {

Byte[] B = new Byte[4];

for (int i = 0; i < 4; i++) {

B[i] = (byte) (num >>> (24-I * 8));

}

return b;

}

public static int Bytes2int (byte[] b) {