surveymonkey-android-sdk
· The SurveyMonkey Mobile Feedback SDK gives you all the tools you need to collect user feedback about your in-app experience.
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 surveymonkey-android-sdk-3.0.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
