使用hex数初始化无符号字节数组
我知道Java中缺少无符号字节然后如何使用0到255之间的整数（hex）初始化字节数组？
final byte assoc_resp_msg_int[] = new byte[] { 0xe3, 0x00, //APDU CHOICE Type(AareApdu) 0x00, 0x2c, //CHOICE.length = 44 0x00, 0x00, //result=accept 0x50, 0x79, //data-proto-id = 20601 0x00, 0x26, //data-proto-info length = 38 0x80, 0x00, 0x00, 0x00, //protocolVersion 0x80, 0x00, //encoding rules = MDER 0x80, 0x00, 0x00, 0x00, //nomenclatureVersion 0x00, 0x00, 0x00, 0x00, //functionalUnits, normal Association 0x80, 0x00, 0x00, 0x00, //systemType = sys-type-manager 0x00, 0x08, //system-id length = 8 and value (manufacturer- and device- specific) 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00, 0x00, //Manager's response to config-id is always 0 0x00, 0x00, //Manager's response to data-req-mode-flags is always 0 0x00, 0x00, //data-req-init-agent-count and data-req-init-manager-count are always 0 0x00, 0x00, 0x00, 0x00, //optionList.count = 0 | optionList.length = 0 }; 你必须在字节中存储0x80 ，如下所示：
final byte assoc_resp_msg_int[] = new byte[] { (byte)0xe3, 0x00, //APDU CHOICE Type(AareApdu) 0x00, 0x2c, //CHOICE.length = 44 0x00, 0x00, //result=accept 0x50, 0x79, //data-proto-id = 20601 0x00, 0x26, (byte)0x80, ... } System.out.println(assoc_resp_msg_int[10]&0xFF); //128