Command to compile and run the code against the sample file:
javac -cp lib/junit-platform-console-standalone-1.11.4.jar src/*.java && java -cp src PayoffApp userInput.txt
Command to run tests from command line:
javac -cp lib/junit-platform-console-standalone-1.11.4.jar src/*.java && java -jar lib/junit-platform-console-standalone-1.11.4.jar -cp src --scan-classpath