You should be in the folder SmartCalculator

javac -cp "lib/hamcrest-core-1.3.jar;lib/lombok-1.18.20.jar;lib/junit-4.13.2.jar;lib/logback-classic-1.2.3.jar;lib/logback-core-1.2.3.jar;lib/slf4j-api-1.7.25.jar" src/main/java/com/calculator/smart/api/*.java

java -cp "lib/hamcrest-core-1.3.jar;lib/lombok-1.18.20.jar;lib/junit-4.13.2.jar;lib/logback-classic-1.2.3.jar;lib/logback-core-1.2.3.jar;lib/slf4j-api-1.7.25.jar;./src/main/java;." com.calculator.smart.api.Main "Homework.txt"

You can change "Homework.txt" on "YourFile.txt"

To start testing: mvn test