To pass this to a recursive method, the anonymous class should extend a wrapper type known to the method.

为了在递归方法中传递，匿名类应该扩展方法已知的包装器类型。

youdao

To pass this to a recursive method, the anonymous class should extend a wrapper type known to the method.

为了在递归方法中传递，匿名类应该扩展方法已知的包装器类型。

youdao