Command line via the JAR file

To run it through the Java file, we need to compile and package it, and then we can run the project with the Java command line. To compile and package it, we can use the pretty standard Maven command like this:

mvn clean install

After the project is compiled and packaged as a Fat-JAR, we can execute the JAR file, go to the target folder and check the files from this folder, probably the result will look like this:

We have two main files in our target folder, the cms-0.0.1-SNAPSHOT.jar and the cms-0.0.1-SNAPSHOT.jar.original, the file with the .original extension is not executable. It is the original artifact resulting from the compilation, and the other is our executable file. It is what we are looking for, let's execute it, type the following command:

java -jar cms-0.0.1-SNAPSHOT.jar

The result should be as displayed. The application is up and running:

That is it for this part, in the next section, we will create the first REST (Representational State Transfer) resources and understand how the REST endpoints work.