byte数组转换为short,int

byte数组转换为short,int int转换为byte数组    private static byte[] shortToByteArray(short s)    {    byte[] shortBuf = new byte[2];    for(int i=0;i<2;i++)    {    int offset = (shortBuf.length - 1 -i)*8;    shortBuf[i] = (byte)((s>>>offset)&0xff);    }    return shortBuf;   }

   public static int byteArrayToShort(byte [] b)     {     return (b[0] << 8)             + (b[1] & 0xFF);    }        public static byte[] intToByteArray(int value)    {     byte[] b = new byte[4];      for (int i = 0; i < 4; i++)       {           int offset = (b.length - 1 - i) * 8;           b[i] = (byte) ((value >>> offset) & 0xFF);      }      return b;    }

  public static int byteArrayToInt(byte [] b)    {            return (b[0] << 24)                    + ((b[1] & 0xFF) << 16)                    + ((b[2] & 0xFF) << 8)                    + (b[3] & 0xFF);   }