119 

   120     /**

   121      * Find a sub component by class name.

   122      * Always run this method on the EDT thread

   123      */

   124     public static Component findSubComponent(Component parent, String className) {

   125         String parentClassName = parent.getClass().getName();

   126 

   127         if (parentClassName.contains(className)) {

   128             return parent;

   129         }

   130 

   131         if (parent instanceof Container) {

   132             for (Component child : ((Container) parent).getComponents()) {

   133                 Component subComponent = findSubComponent(child, className);

   134 

   135                 if (subComponent != null) {

   136                     return subComponent;

   137                 }

   138             }

   139         }

   140 

   141         return null;

   142     }