Urgent help with epson Java POS ADK

Hello, we have installed JRE and Epson's JAVA POS ADK for epson pos printer with validation ([login to view URL]) in a Windows 10 PC (accessible remotely via anydesk). We also have the relevant sample codes available along with the ADK installation. We want to be able to perform print, and validation operation via a java program in CLI mode, and later on plan to invoke this java program via a web application which I will run using localhost inside the same computer. We have downloaded the Java POS ADK from here - [login to view URL] We tried compiling the sample code, and although we were able to compile the sample code, we were unable to run the class file, with it giving error "Cannot find or load main class", even after writing the class file name properly with namespace. Java is not our main programming language so we need outside help to fix the code and run it properly and do printing as well as validation. Need someone to work on this with us ASAP, as this is an urgent requirement. If you have any questions, feel free to ask.