用 javadoc 创建文档
# 从源代码中提取 HTML 文档,输出到指定目录 doc 。
javadoc Hello.java -d doc
SEE
Javadoc Tool
http://www.oracle.com/technetwork/java/javase/documentation/index-jsp-135444.htmlHow to Write Doc Comments for the Javadoc Tool
http://www.oracle.com/technetwork/java/javase/documentation/index-137868.html