codePost doesn’t support running files that contain null characters (\0 ). This includes:
binary file types, such as .class or .o files
some application file types (.xlsx )
Instead of uploading compiled files (e.g. .class ), you can upload the file's source code and use your environment's run script to compile them. For example, instead of uploading Helper.class , upload Helper.java and compile it.
If you'd like to work with an application file type that isn't supported, let us know!