在这个目录下有org/apache/lucene/demo，用于存放所有演示程序的源文件。

Under this directory is org/apache/lucene/demo. This is where all the Java sources for the demos live.

youdao

在这个目录下有org/apache/lucene/demo，用于存放所有演示程序的源文件。

Under this directory is org/apache/lucene/demo. This is where all the Java sources for the demos live.

youdao