title: java.lang.UnsupportedClassVersionError: org/sonar/batch/bootstrapper/EnvironmentInformation : Unsupported major.minor version 52.0
body: <p>Environment details:</p>
  
  <ul>
  <li>SonarQube 5.6</li>
  <li>Apache Maven 3.3.9</li>
  <li>Java version: 1.7.0_09</li>
  </ul>
  
  <p>I integrated SonarQube plugin with java maven project like in pom.xml</p>
  
  <pre><code>&lt;build&gt;
      &lt;pluginManagement&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.sonarsource.scanner.maven&lt;/groupId&gt;
                  &lt;artifactId&gt;sonar-maven-plugin&lt;/artifactId&gt;
                  &lt;version&gt;3.0.2&lt;/version&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/pluginManagement&gt;
  &lt;/build&gt;
  </code></pre>
  
  <p>While executing goal: <code>mvn sonar:sonar -Dsonar.host.url=&lt;url&gt;</code></p>
  
  <p>Getting exception:</p>
  
  <blockquote>
    <p>[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.2:sonar (default-cli) on project example-java-maven:
          Execution default-cli of goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.2:sonar failed:
          An API incompatibility was encountered while executing org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.2:sonar:
          java.lang.UnsupportedClassVersionError: org/sonar/batch/bootstrapper/EnvironmentInformation:
          Unsupported major.minor version 52.0
        [ERROR] -----------------------------------------------------
        [ERROR] realm =    plugin>org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.2</p>
  </blockquote>