Instructions to open your code in Intellij
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1. Go to File -> Open (or Open Project)
2. Select the directory containing the code
DONE !

Instructions to execute the application
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1. You need to create the jar file. Look to see how to configure an artifact in this link: https://www.jetbrains.com/idea/help/packaging-a-module-into-a-jar-file.html
2. In the terminal, enter in the folder where jar file was created and execute the following command: java -jar <jar_file>.jar