The aim of this project is to provide a frame for some simple Maven related exercises.

Project is build from three independent modules:

• calculator: The main app, uses interfaces from calculator-api. You need to create this project.
• calculator-api: provides a basic API for a calculator app.
• calculator-test: tests for the app.

The assignment is to implement the calculator in a few, maven related steps (a little Java code with a lot of maven based steps).

1. Install Maven, if its not on your PC yet (You can use apt on Ubuntu). Verify that its installed by running mvn -v in a terminal.
2. Clone this project.
3. Create new maven project in the root folder with maven-archetype-quickstart: mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart Use the following parameters:

   groupId: com.example.maven.calculator
   artifactId: calculator
   version: 1.0-SNAPSHOT

Make a new empty project in IDEA and import all 3 Maven projects as existing modules from the pom.xml files.
You might need to install your new calculator project, you can do this either from the console (see below) or in the Maven Projects tab in IDEA (its on the right side)
In the pom.xml files adjust the following:

1. Study the pom files and remove unneeded dependencies from them.
2. set java source and target runtime to Java 8.0.  
3. Install locally: Install the calculator-api project locally with mvn clean install. You can verify that its installed by checking in your <home>/.m2 folder.
4. change junit to latest available version (find it on Maven Central).
5. add calculator-api as a dependency in the generated project
6. Implement the calculator (Run the project with mvn clean package)
7. Test the code: Check with the reference calculator-test project if everything works fine. First build the project with skipping tests: -DskipTest=true. Depending which calculator you've implemented test it with run a desired test. For Double calculator run mvn test -Dtest=DoubleCalculatorTest
8. Bonus exercise: compress your build directory into a .rar file with the rar Maven plugin.