jar edit and re-compile in simple way

Question

I have a jar file called ScreenCapture.jar

I use http://jd.benow.ca/ what is in there. I have even downloaded jd-gui

This is what it shows me

Answer 1

On your first question JD-GUI is just a viewer you need to use dex2jar to retrieve the JAR file; decompile and save the classes you need to change; import JAR and JAVA files in your Android Studio; modify; recompile and repackaged.