How to Run a Java Main Method Using Maven?

Maven Run Project: How to Execute the Main Method of a Java Class

The Maven "pom.xml" file can be used to configure various aspects of a Java project's lifecycle, including the execution of Java classes. While Maven does not provide a direct "phase" or "goal" to execute the main method of a Java class, there are ways to accomplish this using Maven plugins.

Using the exec-maven-plugin

The exec-maven-plugin provides functionality for executing Java classes or any arbitrary process. To execute the main method of a Java class using this plugin, you can use the following command:

mvn exec:java -Dexec.mainClass="com.example.Main" [-Dexec.args="argument1"] ...

Here, "com.example.Main" represents the fully qualified name of the Java class containing the main method. You can specify optional arguments to the main method using the "-Dexec.args" parameter.

If you prefer to configure the plugin directly in your "pom.xml" file, you can use the following:

<project>
    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <mainClass>com.example.Main</mainClass>
                    <arguments>
                        <argument>argument1</argument>
                    </arguments>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Once the plugin is configured, you can simply run "mvn exec:java" to execute the main method of your Java class. This provides a convenient way to test or run individual Java classes within a Maven project.

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