title: java.lang.ClassNotFoundException How it's possible?
body: <p>I added library with this dependency</p>
  
  <pre><code>        &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.jackson&lt;/groupId&gt;
              &lt;artifactId&gt;jackson-core-asl&lt;/artifactId&gt;
              &lt;version&gt;1.9.13&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.jackson&lt;/groupId&gt;
              &lt;artifactId&gt;jackson-mapper-asl&lt;/artifactId&gt;
              &lt;version&gt;1.9.13&lt;/version&gt;
          &lt;/dependency&gt;
  </code></pre>
  
  <p>then when I try to create pojo class Idea told me that it can't find class but class exist
  java.lang.ClassNotFoundException: org.codehaus.jackson.annotate.JsonUnwrapped</p>
  
  <pre><code>@Override
  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      resp.addHeader("Content-Type", "application/json; charset=utf-8");
      StringBuilder builder = new StringBuilder();
      String a = null;
      try (BufferedReader reader = new BufferedReader(new InputStreamReader(req.getInputStream(), "UTF-8"))){
          while ((a = reader.readLine())!=null){
              builder.append(a);
          }
      }
      ObjectMapper objectMapper = new ObjectMapper();
      UserPojo pojo = objectMapper.readValue(builder.toString(),UserPojo.class);
     }
  </code></pre>
  
  <p>Example picture:</p>
  
  <p><img src="https://i.stack.imgur.com/L4Kif.png" /></p>
  
  <p>I have this library in classpath.
  And I try to use another version of jackson. When I use version 2.+ I have another crazy error Idea can't find class ObjectMapper only in this class.</p>
  
  <p>On this picture i have class (ObjectMapper) not found error:</p>
  
  <p><img src="https://i.stack.imgur.com/yGLGJ.png" /></p>
  
  <p>On this picture I DON'T have error:</p>
  
  <p><img src="https://i.stack.imgur.com/KzykL.png" /></p>
  
  <p>but this two class in one package. How it's possible and How it's fix?</p>
  
  <p>Add pom</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;project xmlns="http://maven.apache.org/POM/4.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
      &lt;groupId&gt;PetClinic&lt;/groupId&gt;
      &lt;artifactId&gt;cpw&lt;/artifactId&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
      &lt;packaging&gt;war&lt;/packaging&gt;
  
      &lt;name&gt;Clinic Pet Web&lt;/name&gt;
      &lt;url&gt;http://maven.apache.org&lt;/url&gt;
  
      &lt;dependencies&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;org.hibernate&lt;/groupId&gt;
              &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt;
              &lt;version&gt;5.3.5.Final&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;postgresql&lt;/groupId&gt;
              &lt;artifactId&gt;postgresql&lt;/artifactId&gt;
              &lt;version&gt;9.1-901-1.jdbc4&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.jackson&lt;/groupId&gt;
              &lt;artifactId&gt;jackson-core-asl&lt;/artifactId&gt;
              &lt;version&gt;1.9.13&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.jackson&lt;/groupId&gt;
              &lt;artifactId&gt;jackson-mapper-asl&lt;/artifactId&gt;
              &lt;version&gt;1.9.13&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;log4j&lt;/groupId&gt;
              &lt;artifactId&gt;log4j&lt;/artifactId&gt;
              &lt;version&gt;1.2.17&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;jstl&lt;/groupId&gt;
              &lt;artifactId&gt;jstl&lt;/artifactId&gt;
              &lt;version&gt;1.2&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;javax.servlet&lt;/groupId&gt;
              &lt;artifactId&gt;servlet-api&lt;/artifactId&gt;
              &lt;version&gt;2.5&lt;/version&gt;
              &lt;scope&gt;provided&lt;/scope&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;commons-logging&lt;/groupId&gt;
              &lt;artifactId&gt;commons-logging&lt;/artifactId&gt;
              &lt;version&gt;1.1.1&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;taglibs&lt;/groupId&gt;
              &lt;artifactId&gt;standard&lt;/artifactId&gt;
              &lt;version&gt;1.1.2&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;commons-lang&lt;/groupId&gt;
              &lt;artifactId&gt;commons-lang&lt;/artifactId&gt;
              &lt;version&gt;2.1&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.plexus&lt;/groupId&gt;
              &lt;artifactId&gt;plexus-utils&lt;/artifactId&gt;
              &lt;version&gt;1.1&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;junit&lt;/groupId&gt;
              &lt;artifactId&gt;junit&lt;/artifactId&gt;
              &lt;version&gt;4.8.2&lt;/version&gt;
              &lt;scope&gt;test&lt;/scope&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;PetClinic&lt;/groupId&gt;
              &lt;artifactId&gt;se&lt;/artifactId&gt;
              &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.mockito&lt;/groupId&gt;
              &lt;artifactId&gt;mockito-all&lt;/artifactId&gt;
              &lt;version&gt;1.10.19&lt;/version&gt;
              &lt;scope&gt;test&lt;/scope&gt;
          &lt;/dependency&gt;
  
      &lt;/dependencies&gt;
  
      &lt;build&gt;
          &lt;finalName&gt;PetClinicWeb&lt;/finalName&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                  &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
                  &lt;version&gt;3.3&lt;/version&gt;
                  &lt;configuration&gt;
                      &lt;source&gt;1.7&lt;/source&gt;
                      &lt;target&gt;1.7&lt;/target&gt;
                      &lt;encoding&gt;UTF-8&lt;/encoding&gt;
                  &lt;/configuration&gt;
              &lt;/plugin&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.jacoco&lt;/groupId&gt;
                  &lt;artifactId&gt;jacoco-maven-plugin&lt;/artifactId&gt;
                  &lt;version&gt;0.7.4.201502262128&lt;/version&gt;
                  &lt;configuration&gt;
                      &lt;destFile&gt;${basedir}/target/coverage-reports/jacoco-unit.exec&lt;/destFile&gt;
                      &lt;dataFile&gt;${basedir}/target/coverage-reports/jacoco-unit.exec&lt;/dataFile&gt;
                  &lt;/configuration&gt;
                  &lt;executions&gt;
                      &lt;execution&gt;
                          &lt;id&gt;jacoco-initialize&lt;/id&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;prepare-agent&lt;/goal&gt;
                          &lt;/goals&gt;
                      &lt;/execution&gt;
                      &lt;execution&gt;
                          &lt;id&gt;jacoco-site&lt;/id&gt;
                          &lt;phase&gt;package&lt;/phase&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;report&lt;/goal&gt;
                          &lt;/goals&gt;
                      &lt;/execution&gt;
                  &lt;/executions&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>