在Windows 64位上编译Java jar并在RPI 32位上执行

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The following code works fine when I run it as a jar file on Windows 10 64 bit machine but when I copy the jar file over to a RPI, it consistently generates the Bad message error. I tried the suggestion to use JAVAW from the above link but the command cannot be found on the RPI. IOW, the checksum can't be correctly calculated on the RPI. Any suggestions on how to fix this issue?

int messageBody[] = new int[(messageLen / 2) - 2];
checkSum = 0;
            for (int charPtr = 2; charPtr < messageLen; ) {
                firstChar = theMessage.charAt(charPtr++);
                secondChar = theMessage.charAt(charPtr++);
                theValue = ((firstChar >= 'A' ? (firstChar - 'A') + 10 : (firstChar - '0')) << 4)
                        | (secondChar >= 'A' ? (secondChar - 'A') + 10 : (secondChar - '0'));

                if (messagePtr < messageBody.length) {
                    checkSum += theValue;
                    messageBody[messagePtr++] = theValue;
                    continue;
                }
                // Compute checksum

                checkSum = (-checkSum & 0xff);
                if (checkSum != theValue) {
                    System.err.println(System.lineSeparator() + "Check sum on received UPB packet failed -- should be " + checkSum + " but received as " + theValue);
                    System.err.println(System.lineSeparator() +"   BAD MESSAGE[" + theMessage + "], " + theMessage.length() + " bytes");
                    return;
                }
            }

Answer 1

我唯一想到的是不同的字符串编码...

Answer 2

The native code in java which is written in 32/64 bit is not portable and we need to recompile in target environment.

Reference url: http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#64bit_native_porting

Hi Grogi & Bob S, Thanks for the input.