BeanContextSupport.java 文件源码

/**
 * Gets the Component (if any) associated with the specified child.
 * @param child the specified child
 * @return the Component (if any) associated with the specified child.
 */
protected static final Visibility getChildVisibility(Object child) {
    try {
        return (Visibility)child;
    } catch (ClassCastException cce) {
        return null;
    }
}