How to set multiple java classpaths in git bash terminal

I have 3 directories named lib, src and out,
and 2 files, Main.java in the src folder and utils.jar in the lib folder.

To compile the Main.java file I ran the following command:

$ javac -cp lib/utils.jar -d out src/Main.java

But now I can't seem to run it without changing my directory to out and running this command:

$ java -cp ../lib/utils.jar:. Main

As a side note, running

$ java -cp .:../lib/utils.jar Main

gives me:

Error: Could not find or load main class Main  
Caused by: java.lang.ClassNotFoundException: Main

even though it's the same thing no?

Anyway running this command (or similar variations)

$ java -cp lib/utils.jar:out Main

gives me

Error: Could not find or load main class Main  
Caused by: java.lang.ClassNotFoundException: Main