title: How get rt.jar dependencies in java 11?
body: <p>We are planning to migrate our project from java 8(currently running on tomcat 7) to java 11, since rt.jar file is no longer available,
  and tomcat startup needs classes from <code>sun.misc</code> package for instance,<code>sun.misc.GC</code>. Also, our application uses <code>javax.xml.ws.WebServiceFeature</code>.
  we are getting no <code>java.lang.NoClassDefFoundError</code> and application fails to launch.
  How to get this dependencies resolved in java 11?</p>