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.html

• How to Write Doc Comments for the Javadoc Tool
  http://www.oracle.com/technetwork/java/javase/documentation/index-137868.html