基于小端规则的几个java方法

来源：互联网发布：淘宝上的卫生巾能买吗编辑：程序博客网时间：2024/04/30 20:39

public static byte[] InttoByteArray(int n) {byte[] b = new byte[4];b[0] = (byte) (n & 0xff);b[1] = (byte) (n >> 8 & 0xff);b[2] = (byte) (n >> 16 & 0xff);b[3] = (byte) (n >> 24 & 0xff);return b;}

public static byte[] ShorttoByteArray(short n) {byte[] b = new byte[2];b[1] = (byte) (n & 0xff);b[0] = (byte) (n >> 8 & 0xff);return b;}

public static int ByteArraytoInt(byte[] b) {int iOutcome = 0;byte bLoop;for (int i = 0; i < 4; i++) {bLoop = b[i];iOutcome += (bLoop & 0xff) << (8 * i);}return iOutcome;}

public static short ByteArraytoShort(byte[] b) {short iOutcome = 0;byte bLoop;for (int i = 0; i < 2; i++) {bLoop = b[i];iOutcome += (bLoop & 0xff) << (8 * i);}return iOutcome;}

附：通常字节序分为两类：Big-Endian和Little-Endian。具体如下
[1] Little-Endian:低位字节排放在内存的低地址端，高位字节排放在内存的高地址端。
[2] Big-Endian :高位字节排放在内存的低地址端，低位字节排放在内存的高地址端。
[3] 网络字节序 :TCP/IP各层协议将字节序定义为Big-Endian。

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