改进的JavaDocs（Improved JavaDocs）

可以使用javadoc工具生成Java文档。 它目前以html 4.0格式生成文档。 在java 9中，我们可以在命令行参数中使用-html5选项生成html 5格式的文档。

旧样式java文档

请考虑C:/ JAVA文件夹中的以下代码。

Tester.java

/**
  * @author MahKumar
  * @version 0.1
*/
public class Tester {
   /**
      * Default method to be run to print 
      * <p>Hello world</p>
      * @param args command line arguments
   */
   public static void main(String []args) {
      System.out.println("Hello World");
   }
}

现在运行jdk 7的javadoc工具来生成文档。

C:\JAVA>javadoc -d C:/JAVA Tester.java
Loading source file tester.java...
Constructing Javadoc information...
Standard Doclet version 1.7.0_21
Building tree for all the packages and classes...
Generating C:\JAVA\Tester.html...
Generating C:\JAVA\package-frame.html...
Generating C:\JAVA\package-summary.html...
Generating C:\JAVA\package-tree.html...
Generating C:\JAVA\constant-values.html...
Building index for all the packages and classes...
Generating C:\JAVA\overview-tree.html...
Generating C:\JAVA\index-all.html...
Generating C:\JAVA\deprecated-list.html...
Building index for all classes...
Generating C:\JAVA\allclasses-frame.html...
Generating C:\JAVA\allclasses-noframe.html...
Generating C:\JAVA\index.html...
Generating C:\JAVA\help-doc.html...

它将在C:/ JAVA目录中创建java文档页面，您将看到以下输出。

支持搜索和HTML5的新Java文档

使用-html5标志运行jdk 9的javadoc工具以生成新类型的文档。

C:\JAVA> javadoc -d C:/JAVA -html5 Tester.java
Loading source file Tester.java...
Constructing Javadoc information...
Standard Doclet version 9.0.1
Building tree for all the packages and classes...
Generating C:\JAVA\Tester.html...
Generating C:\JAVA\package-frame.html...
Generating C:\JAVA\package-summary.html...
Generating C:\JAVA\package-tree.html...
Generating C:\JAVA\constant-values.html...
Building index for all the packages and classes...
Generating C:\JAVA\overview-tree.html...
Generating C:\JAVA\index-all.html...
Generating C:\JAVA\deprecated-list.html...
Building index for all classes...
Generating C:\JAVA\allclasses-frame.html...
Generating C:\JAVA\allclasses-frame.html...
Generating C:\JAVA\allclasses-noframe.html...
Generating C:\JAVA\allclasses-noframe.html...
Generating C:\JAVA\index.html...
Generating C:\JAVA\help-doc.html...

它将在D:/ test目录中创建更新的java文档页面，您将看到以下输出。