Maven is primarily used for Java-based projects—one of the world’s most widely used programming languages. When we talk about Java, Eclipse is the integrated development environment (IDE) that often comes to mind.
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Basics of Eclipse
Eclipse is one of the most popular IDEs for Java and Android application development. It provides an excellent plugin, M2Eclipse, which integrates Maven and Eclipse.
M2Eclipse automatically downloads required dependencies from remote Maven repositories. The outputs of the Maven commands can be seen in Eclipse through its console. Maven dependencies can be updated with the IDE, and Maven builds can be launched within Eclipse.
Demo - Maven project in Eclipse
The first step is to open Eclipse, which comes with the integrated Maven environment. For this demo, we are using the Oxygen version of eclipse.
After opening Eclipse, choose the workspace you want to use.
The Eclipse window opens on the screen. Since there aren’t any projects yet, complete the following steps:
- Go to the File option
- In the drop-down menu, select New
- Select the Project option
If you want to create a Java project, you can select the “Java Project” option. Since we are not creating a Java project specifically, we have chosen the “Project” option.
The dialog box that appears on the screen will display different types of projects.
- Select the Maven Project option
- Click on Next
A dialog box will appear. Select the default workspace.
- Click on “Next”
Several Group IDs, Artifact IDs, and Versions will then appear.
- Select a plugin there and click on “Next”
In the next dialog box that appears, you’ll complete the following steps:
- Enter the Group ID
- Enter the Artifact ID
- The version will appear on the screen
These items can all be modified at a later time if needed.
- Click on “Finish”
The project is now created.
- Open the pom.xml file
You can see all the basic information that you have entered on the screen, such as the Artifact ID, Group ID, etc.
You can see the junit dependencies have been added.
This process takes place by default in Eclipse. There will also be some by default test cases.
There you can find AppTest.java to be a default test case.
When you click on that, you can see the test cases written in JUnit on your Eclipse screen.
When it comes to adding more test cases, it will depend on the user, but these test cases and commands can easily be added in the workspace.
If we try to remove certain dependencies from our file, we will receive error messages. To troubleshoot this, complete the following steps:
- Go to another tab: mavenproject/pom.xml
- Delete any dependencies
- Save the file
Immediately, there will be several error messages in the AppTest.java.
Return to the previous screen and undo the deletion. The errors that occurred will disappear.
The demo shows the relationship between the dependencies and the Eclipse. When a Maven project is selected, all such dependencies are automatically downloaded. If any dependencies are not present, Eclipse will show errors.
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Not only did we go over the basics of Maven in this tutorial, but we also covered how to create a basic Maven project in Eclipse. We learned how to create a Maven project from scratch and what steps to keep in mind. We saw the relationship between the dependencies and how a Maven project works in Eclipse.
Do you have any questions for us? Let us know in the comments section, and our experts will be happy to answer them for you.
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