Maven Surefire @BeforeClass is executed before each test

I am trying to use annotation @BeforeClass

to initialize data and DB connection. But when I run my test with mvn test

, I notice that the annotated static method @BeforeClass

is executed for each test.

I don't understand why the static method is not executed once for the test class?

My parent pom contains the following configuration for the maven surefire plugin:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.13</version>
    <configuration>
        <useSystemClassLoader>false</useSystemClassLoader>
        <systemPropertyVariables>
            <properties.path>${properties.path}</properties.path>
            <dico.path>${dico.path}</dico.path>
        </systemPropertyVariables>
        <!-- On ne joue pas les tests d'integrations -->
        <excludes>
            <exclude>**/**ITCase.java</exclude>
        </excludes>
    </configuration>
</plugin>