The Maven enforcer plugin lets you control or enforce constraints in your build environment. These could be the Maven version, Java version, operating system parameters, and even user-defined rules.

The plugin defines two goals: enforce and displayInfo. The enforcer:enforce goal will execute all the defined rules against all the modules in a multi-module Maven project, while enforcer:displayInfo will display the project compliance details with respect to the standard rule set.

The maven-enforcer-plugin is not defined in the super POM and should be explicitly defined in your project POM file:

<plugins>
  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-enforcer-plugin</artifactId>
    <version>1.3.1</version>
    <executions>
      <execution>
        <id>enforce-versions</id>
        <goals>
          <goal>enforce</goal>
        </goals>
 ...