青眼影沉沉妈妈网:[转载] Javadoc常用使用方法

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[转载] Javadoc常用使用方法
我们知道Java中有三种注释语句:
1.//用于单行注释。
2./*...*/用于多行注释,从/*开始,到*/结束,不能嵌套。
3./**...*/则是为支持jdk工具javadoc.exe而特有的注释语句。
javadoc工具能从java源文件中读取第三种注释,并能识别注释中用@标识的一些特殊变量(见表),制作成Html格式的类说明文档。 javadoc不但能对一个java源文件生成注释文档,而且能对目录和包生成交叉链接的html格式的类说明文档,十分方便。
注释中可以出现的关键字,以@开头:
@author         作者名
@version        版本标识
@parameter      参数名及其意义
@since          最早出现的JDK版本
@return         返回值
@throws         异常类及抛出条件
@deprecated     引起不推荐使用的警告
@see            交叉参考
下面是javadoc.exe的用法
C:\java>javadoc -help
usage: javadoc [options] [packagenames] [sourcefiles] [classnames] [@files]
-overview            Read overview documentation from HTML file
-public                    Show only public classes and members
-protected                 Show protected/public classes and members (default)
-package                   Show package/protected/public classes and members
-private                   Show all classes and members
-help                      Display command line options and exit
-doclet             Generate output via alternate doclet
-docletpath          Specify where to find doclet class files
-sourcepath      Specify where to find source files
-classpath       Specify where to find user class files
-exclude          Specify a list of packages to exclude
-subpackages Specify subpackages to recursively load
-breakiterator             Compute 1st sentence with BreakIterator
-bootclasspath Override location of class files loaded by the bootstrap class loader
-source           Provide source compatibility with specified release
-extdirs          Override location of installed extensions
-verbose                   Output messages about what Javadoc is doing
-locale              Locale to be used, e.g. en_US or en_US_WIN
-encoding            Source file encoding name
-J                   Pass directly to the runtime system
Provided by Standard doclet:
-d                      Destination directory for output files
-use                               Create class and package usage pages
-version                           Include @version paragraphs
-author                            Include @author paragraphs
-docfilessubdirs                   Recursively copy doc-file subdirectories
-splitindex                        Split index into one file per letter
-windowtitle                 Browser window title for the documenation
-doctitle               Include title for the overview page
-header                 Include header text for each page
-footer                 Include footer text for each page
-bottom                 Include bottom text for each page
-link                         Create links to javadoc output at
-linkoffline           Link to docs at using package list at
-excludedocfilessubdir :.. Exclude any doc-files subdirectories with given name.
-group :..          Group specified packages together in overviewpage
-nocomment                         Supress description and tags, generate only declarations.
-nodeprecated                      Do not include @deprecated information
-noqualifier ::...   Exclude the list of qualifiers from the output.
-nosince                           Do not include @since information
-nodeprecatedlist                  Do not generate deprecated list
-notree                            Do not generate class hierarchy
-noindex                           Do not generate index
-nohelp                            Do not generate help link
-nonavbar                          Do not generate navigation bar
-quiet                             Do not display status messages to screen
-serialwarn                        Generate warning about @serial tag
-tag ::
   Specify single argument custom tags
-taglet                            The fully qualified name of Taglet to register
-tagletpath                        The path to Taglets
-charset                  Charset for cross-platform viewing of generated documentation.
-helpfile                    Include file that help link links to
-linksource                        Generate source in HTML
-stylesheetfile              File to change style of the generated documentation
-docencoding                 Output encoding name
C:\java>
下面请看用javadoc生成的文档
生成文档:
C:\java>javadoc   JavadocDemo.java
Loading source file JavadocDemo.java...
Constructing Javadoc information...
Standard Doclet version 1.4.2_03
Generating constant-values.html...
Building tree for all the packages and classes...
Building index for all the packages and classes...
Generating overview-tree.html...
Generating index-all.html...
Generating deprecated-list.html...
Building index for all classes...
Generating allclasses-frame.html...
Generating allclasses-noframe.html...
Generating index.html...
Generating packages.html...
Generating JavadocDemo.html...
JavadocDemo.java:11: warning - Tag @see: reference not found: javax.swing.Japplet
Generating serialized-form.html...
Generating package-list...
Generating help-doc.html...
Generating stylesheet.css...
1 warning
C:\java>
附源文件:
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
/**
*JavadocDemo.java,一个显示JavaDoc注释的Applet
*

注意这只是HelloApplet的一个带注释的版本
*@see java.applet.Applet
*@see javax.swing.Japplet
*/
public class JavadocDemo extends Applet{
/** init()是一个Applet方法,由浏览器调用进行初始化
* 只调用一次
* @return 无
*/
public void init(){
//创建并添加一个按钮
//其它什么也不做
Button b;
b=new Button("Hello");
add(b);
show();
}
/** paint() 是一个AWT组件方法,在组件要绘制时调用,只
* 是在Applet的窗口中画带色的方框。
* 参数 g一个java.awt.Graphics
* 用在所有绘制方法中
*/
public void paint(Graphics g){
int w=getSize().width,h=getSize().height;
g.setColor(Color.yellow);
g.fillRect(0,0,w/2,h);
g.setColor(Color.green);
g.fillRect(w/2,0,w,h);
g.setColor(Color.black);
g.drawString("Welcome to Java",50,50);
}
/** show()用于使组件可见,此方法在
* JDK1.1中被归入不推荐使用
*@since 1.0
*deprecated换用setVisible(true)
*/
public void show(){
//由于覆盖了show(),此applet 不能显示
}
/** Applet必须有一个公共的无参数构造方法
*@throws java.lang.IllegalArgumentException
*/
public JavadocDemo(){
if(new java.util.Date().getDay()==0){
throw new IllegalArgumentException("Never on a Sunday");
}
}
}
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