title: java.lang.ClassNotFoundException: sun.misc.GC
body: <p>I used tomcat server 8.0.</p>
  <p>Error: When I run the Tomcat server, I found below error.</p>
  <p>SEVERE: Failed to trigger creation of the GC Daemon thread during Tomcat start to prevent possible memory leaks. This is expected on non-Sun JVMs.</p>
  <pre><code>java.lang.ClassNotFoundException: sun.misc.GC
      at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
      at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
      at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
      at java.base/java.lang.Class.forName0(Native Method)
      at java.base/java.lang.Class.forName(Class.java:315)
      at org.apache.catalina.core.JreMemoryLeakPreventionListener.lifecycleEvent(JreMemoryLeakPreventionListener.java:310)
      at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
      at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
      at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394)
      at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:99)
      at org.apache.catalina.startup.Catalina.load(Catalina.java:580)
      at org.apache.catalina.startup.Catalina.load(Catalina.java:603)
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:310)
      at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:484)
  </code></pre>