retrofitfileuploadkit
· RetrofitUploadKit is a convenient, streamlined Kotlin-based library that wraps around the Retrofit networking library, specifically tailored for simplifying file upload tasks. This kit abstracts the complex setup and configuration typically associated with making multipart HTTP requests for file uploads.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window retrofitfileuploadkit-1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.