apache ode start problem java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory

If you are using Tomcat v.6 or v.7, you probably get the error

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory
  at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54)
Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory
  at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
  at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
  ... 1 more
Could not find the main class: org.apache.catalina.startup.Bootstrap. Program will exit.



 Click on Open launch configuration → Classpath tab → Add External JARs → [your TOMCAT_DIR]\bin\tomcat-juli.jar. Then Ok.