Maven is a popular build tool for Java projects, and it includes built-in support for running tests. Here are the steps to run tests with Maven:

1. Create your test classes: Before you can run tests with Maven, you'll need to create some test classes in your project. Test classes should be located in the "src/test/java" directory and should follow the naming convention "*Test.java".

2. Configure the Maven Surefire plugin: The Surefire plugin is a plugin for Maven that is responsible for running tests. You can configure the plugin in your project's "pom.xml" file by adding a configuration block for the plugin.

Here is an example configuration that tells the Surefire plugin to run all tests in the project:

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>3.0.0-M5</version>
      <configuration>
        <includes>
          <include>**/*Test.java</include>
        </includes>
      </configuration>
    </plugin>
  </plugins>
</build>

In this example, the plugin is configured to include all files with names ending in "Test.java" in the "src/test/java" directory.

3. Run the tests: Once you have configured the Surefire plugin, you can run the tests by executing the "test" goal with Maven. You can do this from the command line by running the following command from the root directory of your project:

mvn test

Maven will compile your code, run the tests, and display the results in the console.

In addition to running tests with Maven, you can also use the tool to generate test reports, filter tests by tag or name, and run tests in parallel. This makes it easy to test and analyze your Java code in a convenient and efficient way.