字节数组转换成十六进制

public static String byte2stringHex(byte[] buf)
{
StringBuffer strBuffer = new StringBuffer();

String str = null;
for (int i = 0; i < buf.length; i++) {
str = String.format(("%02X"), buf[i]);
strBuffer.append(str);
}
return strBuffer.toString();
}

整型转换成十六进制
   public static String getHexCommand(int CommandID)
    {
        return String.format("0x%1$08x", CommandID);
    }