Get File Version

[Peng Ge]

How to use java to get file version?
windows exe file.

[Rob Spoor]

There are two possible ways, neither of them is portable since this kind of information is not available on all systems:
1) use JNI. GetFileVersionInfo or GetFileVersionInfoEx are probably the native API calls you need.
2) call some external program that returns this information using Runtime.exec or ProcessBuilder. I don't know any such program though.

[Peng Ge]

Rob Spoor wrote:There are two possible ways, neither of them is portable since this kind of information is not available on all systems:
1) use JNI. GetFileVersionInfo or GetFileVersionInfoEx are probably the native API calls you need.
2) call some external program that returns this information using Runtime.exec or ProcessBuilder. I don't know any such program though.

Yes, I tried JNA. But I get runtime ERRORs.
It is hard for me to mapping the data type.
Can you please help me?

[Rob Spoor]

I've never used JNA, so not really. But why can't you do this in JNI? That's like JNA but coded in C, C++ or another language that isn't Java.

[Peng Ge]

Rob Spoor wrote:I've never used JNA, so not really. But why can't you do this in JNI? That's like JNA but coded in C, C++ or another language that isn't Java.

Yes, But I dont know how to program in C. Seems JNI is much complicated than JNA. Can you help me with the code?
I just want to read file version.

[Rob Spoor]

Like I said, I have no experience with JNA, so the answer to that is no. As for JNI, if you don't know C then I don't know if it's a wise idea to go that way. Perhaps someone else can help you with the JNA type mappings.