[问题] 转换类型错误 about bullplugin HOT 2 CLOSED

@Test
    public void testGetClassFromJarFile() throws Exception {
        BullPlugin bullPlugin = new BullPlugin(new File("D:\\Code\\Java\\SBtream\\plugIns"));
        ArrayList<GetSomeThing> plugins = new ArrayList<>();
        for (Object c : bullPlugin.getPlugins()) {
            plugins.add((GetSomeThing) c);
        }

        for (GetSomeThing p : plugins) {
            System.out.println(p.getMetaData());
        }
    }

    @Test
    public void testGetClassFromJarFileWithNewInstance() throws Exception {
        BullPlugin bullPlugin = new BullPlugin(new File(Config.PLUGINS_PATH));
        ArrayList<GetSomeThing> plugins = new ArrayList<>();
        for (Class<?> c : bullPlugin.getPlugins()) {
            plugins.add((GetSomeThing) c.getDeclaredConstructor().newInstance());
        }

        for (GetSomeThing p : plugins) {
            System.out.println(p.getRealUrl("9").getData());
        }

    }