private static Class<?> loadClass(String className) {
        try {
            return Class.forName(className, false, getClassLoader());
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }
private static Class < ? > loadClass ( String className ) { try { return Class . forName ( className , false , getClassLoader ( ) ) ; } catch ( ClassNotFoundException e ) { throw new RuntimeException ( e ) ; } }
加载类

@return Class