You might recall that I supplied you with a simple HelloHandler that printed out the name of a callback method each time the method was called.

您也许还记得，我提供了一个简单的HelloHandler，它可以在每一次调用回调方法的时候打印方法的名称。

youdao

You might recall that I supplied you with a simple HelloHandler that printed out the name of a callback method each time the method was called.

您也许还记得，我提供了一个简单的HelloHandler，它可以在每一次调用回调方法的时候打印方法的名称。

youdao