To compile on the command line, change to the src/ directory and use the following command:
javac -cp ../lib/json-simple-1.1.1.jar *.java
To run, use one of the following commands:
Linux:
java -cp ../lib/json-simple-1.1.1.jar: MainDriver
Windows:
java -cp "../lib/json-simple-1.1.1.jar;" MainDriver