ManifestSection.java 文件源码

/** Create a fresh instance.
 * @return the instance
 * @exception Exception if there is an error
 */
protected final Object createInstance() throws Exception {
    if (! isDefaultInstance()) {
        try {
            Object o = Beans.instantiate(getClassLoader(), className);
            clazz = o.getClass();
            if (! getSectionClass().isAssignableFrom(clazz)) {
                throw new ClassCastException("Class " + clazz.getName() + " is not a subclass of " + getSuperclass().getName()); // NOI18N
            }
            return o;
        } catch (ClassNotFoundException cnfe) {
            Exceptions.attachMessage(cnfe,
                                     "Loader for ClassNotFoundException: " +
                                     getClassLoader());
            throw cnfe;
        } catch (LinkageError le) {
            throw new ClassNotFoundException(le.toString(), le);
        }
    } else {
        getSectionClass(); // might throw some exceptions
        if (SharedClassObject.class.isAssignableFrom(clazz)) {
            return SharedClassObject.findObject(clazz.asSubclass(SharedClassObject.class), true);
        } else {
            return clazz.newInstance();
        }
    }
}