command E keyboard shortcut does not open the java class automatically

I am using IntelliJ Idea for Java development and came across the command + E keyboard shortcut to open the recently opened files. But when I hit command + E I see a popup with all the recent files I have worked but it does not open the class automatically. I need to hit enter after iterating through the list. What is the efficient way to toggle between two classes without having to work with tabs?