Senior argue with me that Java can’t do serial programming, I prove to him by read the hardware protocol in HEX , and convert to ASCII using Java. He said the F word to me , I was like “他是什麼意思啊？”

If you can develop, develop than. If you can't, put the senior word before your degree and command others who actualy can.

arduino ide is in java

Sounds like the Peter principle is working well at your company

https://en.m.wikipedia.org/wiki/...

Could you show some code where you're reading raw bytes from hardware device? I'm quite curious as every solution I'm aware of uses third-party libraries in C / C++ / ... to support that.

@hitko https://sourceforge.net/p/...

If you dont wanna read the code, its just gnu.io._ and a stream/bufferedreader

@tekashi That uses jSerialComm, which is written in C and compiled for each platform. It just has Java bindings, and that's exactly the "can't do it in Java" I believe @johnmelodyme's senior meant.

@hitko if you really want to, you can just read the file unix dumps serial data into

@tekashi Yeah, that would work to display HEX data from a device and possibly send some bits to it. Problem is it's by design practically impossible to do anything more with it without system calls, and unless a language provides bindings for those calls (which Java & other higher-level languages don't, except for a handful of basic operations), then you need a native library.

Can you interact with serial devices in Java? Yes. Can you do it in pure Java, so it can be platform-agnostic? No, since it's not a part of Java runtime, but you can achieve the most basic access on a limited number of systems.