JDK14/Java14源码在线阅读

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.TH "JAVADOC" "1" "2020" "JDK 14" "JDK Commands"
.hy
.SH NAME
.PP
javadoc \- generate HTML pages of API documentation from Java source
files
.SH SYNOPSIS
.PP
\f[CB]javadoc\f[R] [\f[I]options\f[R]] [\f[I]packagenames\f[R]]
[\f[I]sourcefiles\f[R]] [\f[CB]\@\f[R]\f[I]files\f[R]]
.TP
.B \f[I]options\f[R]
Specifies command\-line options, separated by spaces.
See \f[B]Options for javadoc\f[R], \f[B]Extended Options\f[R],
\f[B]Standard doclet Options\f[R], and \f[B]Additional Options Provided
by the Standard doclet\f[R].
.RS
.RE
.TP
.B \f[I]packagenames\f[R]
Specifies names of packages that you want to document, separated by
spaces, for example \f[CB]java.lang\ java.lang.reflect\ java.awt\f[R].
If you want to also document the subpackages, then use the
\f[CB]\-subpackages\f[R] option to specify the packages.
.RS
.PP
By default, \f[CB]javadoc\f[R] looks for the specified packages in the
current directory and subdirectories.
Use the \f[CB]\-sourcepath\f[R] option to specify the list of directories
where to look for packages.
.RE
.TP
.B \f[I]sourcefiles\f[R]
Specifies names of Java source files that you want to document,
separated by spaces, for example
\f[CB]Class.java\ Object.java\ Button.java\f[R].
By default, \f[CB]javadoc\f[R] looks for the specified classes in the
current directory.
However, you can specify the full path to the class file and use
wildcard characters, for example
\f[CB]/home/src/java/awt/Graphics*.java\f[R].
You can also specify the path relative to the current directory.
.RS
.RE
.TP
.B \f[CB]\@\f[R]\f[I]files\f[R]
Specifies names of files that contain a list of \f[CB]javadoc\f[R] tool
options, package names, and source file names in any order.
.RS
.RE
.SH DESCRIPTION
.PP
The \f[CB]javadoc\f[R] tool parses the declarations and documentation
comments in a set of Java source files and produces corresponding HTML
pages that describe (by default) the public and protected classes,
nested classes (but not anonymous inner classes), interfaces,
constructors, methods, and fields.
You can use the \f[CB]javadoc\f[R] tool to generate the API documentation
or the implementation documentation for a set of source files.
.PP
You can run the \f[CB]javadoc\f[R] tool on entire packages, individual
source files, or both.
When documenting entire packages, you can use the \f[CB]\-subpackages\f[R]
option either to recursively traverse a directory and its
subdirectories, or to pass in an explicit list of package names.
When you document individual source files, pass in a list of Java source
file names.
See \f[B]javadoc Overview\f[R]
[https://www.oracle.com/pls/topic/lookup?ctx=en/java/javase/13/tools&id=JSJAV\-GUID\-7A344353\-3BBF\-45C4\-8B28\-15025DDCC643]
in Java Platform, Standard Edition Javadoc Guide for information about
using the \f[CB]javadoc\f[R] tool.
.SH CONFORMANCE
.PP
The standard doclet does not validate the content of documentation
comments for conformance, nor does it attempt to correct any errors in
documentation comments.
Anyone running javadoc is advised to be aware of the problems that may
arise when generating non\-conformant output or output containing
executable content, such as JavaScript.
The standard doclet does provide the \f[CB]doclint\f[R] feature to help
developers detect common problems in documentation comments; but it is
also recommended to check the generated output with any appropriate
conformance and other checking tools.
.PP
For more details on the conformance requirements for HTML5 documents,
see \f[B]Conformance requirements\f[R]
[https://www.w3.org/TR/html5/infrastructure.html#conformance\-requirements]
in the HTML5 Specification.
For more details on security issues related to web pages, see the
\f[B]Open Web Application Security Project (OWASP)\f[R]
[https://www.owasp.org] page.
.SH OPTIONS FOR JAVADOC
.PP
The following core \f[CB]javadoc\f[R] options are equivalent to
corresponding \f[CB]javac\f[R] options.
See \f[I]Standard Options\f[R] in \f[B]javac\f[R] for the detailed
descriptions of using these options:
.IP \[bu] 2
\f[CB]\-\-add\-modules\f[R]
.IP \[bu] 2
\f[CB]\-bootclasspath\f[R]
.IP \[bu] 2
\f[CB]\-\-class\-path\f[R], \f[CB]\-classpath\f[R], or \f[CB]\-cp\f[R]
.IP \[bu] 2
\f[CB]\-\-enable\-preview\f[R]
.IP \[bu] 2
\f[CB]\-encoding\f[R]
.IP \[bu] 2
\f[CB]\-extdirs\f[R]
.IP \[bu] 2
\f[CB]\-\-limit\-modules\f[R]
.IP \[bu] 2
\f[CB]\-\-module\f[R]
.IP \[bu] 2
\f[CB]\-\-module\-path\f[R] or \f[CB]\-p\f[R]
.IP \[bu] 2
\f[CB]\-\-module\-source\-path\f[R]
.IP \[bu] 2
\f[CB]\-\-release\f[R]
.IP \[bu] 2
\f[CB]\-source\f[R]
.IP \[bu] 2
\f[CB]\-\-source\-path\f[R] or \f[CB]\-sourcepath\f[R]
.IP \[bu] 2
\f[CB]\-\-system\f[R]
.IP \[bu] 2
\f[CB]\-\-upgrade\-module\-path\f[R]
.PP
The following options are the core \f[CB]javadoc\f[R] options that are not
equivalent to a corresponding \f[CB]javac\f[R] option:
.PP
\f[B]Note:\f[R]
.PP
In tools that support \f[CB]\-\-\f[R] style options, the GNU\-style
options can use the equal sign (=) instead of a white space to separate
the name of an option from its value.
.TP
.B \f[CB]\-breakiterator\f[R]
Computes the first sentence with \f[CB]BreakIterator\f[R].
The first sentence is copied to the package, class, or member summary
and to the alphabetic index.
The \f[CB]BreakIterator\f[R] class is used to determine the end of a
sentence for all languages except for English.
.RS
.IP \[bu] 2
English default sentence\-break algorithm \-\-\- Stops at a period
followed by a space or an HTML block tag, such as \f[CB]<P>\f[R].
.IP \[bu] 2
Breakiterator sentence\-break algorithm \-\-\- Stops at a period,
question mark, or exclamation point followed by a space when the next
word starts with a capital letter.
This is meant to handle most abbreviations (such as "The serial no.
is valid", but will not handle "Mr.
Smith").
The \f[CB]\-breakiterator\f[R] option doesn\[aq]t stop at HTML tags or
sentences that begin with numbers or symbols.
The algorithm stops at the last period in \f[CB]\&../filename\f[R], even
when embedded in an HTML tag.
.RE
.TP
.B \f[CB]\-doclet\f[R] \f[I]class\f[R]
Generates output by using an alternate doclet.
Use the fully qualified name.
This doclet defines the content and formats the output.
If the \f[CB]\-doclet\f[R] option isn\[aq]t used, then the
\f[CB]javadoc\f[R] tool uses the standard doclet for generating the
default HTML format.
This class must contain the \f[CB]start(Root)\f[R] method.
The path to this starting class is defined by the \f[CB]\-docletpath\f[R]
option.
.RS
.RE
.TP
.B \f[CB]\-docletpath\f[R] \f[I]path\f[R]
Specifies where to find doclet class files (specified with the
\f[CB]\-doclet\f[R] option) and any JAR files it depends on.
If the starting class file is in a JAR file, then this option specifies
the path to that JAR file.
You can specify an absolute path or a path relative to the current
directory.
If \f[CB]classpathlist\f[R] contains multiple paths or JAR files, then
they should be separated with a colon (\f[CB]:\f[R]) on Oracle Solaris and
a semi\-colon (\f[CB];\f[R]) on Windows.
This option isn\[aq]t necessary when the \f[CB]doclet\f[R] starting class
is already in the search path.
.RS
.RE
.TP
.B \f[CB]\-exclude\f[R] \f[I]pkglist\f[R]
Unconditionally, excludes the specified packages and their subpackages
from the list formed by \f[CB]\-subpackages\f[R].
It excludes those packages even when they would otherwise be included by
some earlier or later \f[CB]\-subpackages\f[R] option.
.RS
.PP
The following example would include \f[CB]java.io\f[R],
\f[CB]java.util\f[R], and \f[CB]java.math\f[R] (among others), but would
exclude packages rooted at \f[CB]java.net\f[R] and \f[CB]java.lang\f[R].
Notice that these examples exclude \f[CB]java.lang.ref\f[R], which is a
subpackage of \f[CB]java.lang\f[R].
.IP \[bu] 2
\f[B]Oracle Solaris, Linux, and OS X:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-sourcepath\ /home/user/src\ \-subpackages\ java\ \-exclude\ java.net:java.lang\f[R]
.RE
.RE
.IP \[bu] 2
\f[B]Windows:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-sourcepath\ \\user\\src\ \-subpackages\ java\ \-exclude\ java.net:java.lang\f[R]
.RE
.RE
.RE
.TP
.B \f[CB]\-\-expand\-requires\f[R] \f[I]value\f[R]
Instructs the javadoc tool to expand the set of modules to be
documented.
By default, only the modules given explicitly on the command line are
documented.
Supports the following values:
.RS
.IP \[bu] 2
\f[CB]transitive\f[R]: additionally includes all the required transitive
dependencies of those modules.
.IP \[bu] 2
\f[CB]all\f[R]: includes all dependencies.
.RE
.TP
.B \f[CB]\-help\f[R] or \f[CB]\-\-help\f[R]
Displays the online help, which lists all of the \f[CB]javadoc\f[R] and
\f[CB]doclet\f[R] command\-line options.
.RS
.RE
.TP
.B \f[CB]\-\-help\-extra\f[R] or \f[CB]\-X\f[R]
Prints a synopsis of non\-standard options and exits.
.RS
.RE
.TP
.B \f[CB]\-J\f[R]\f[I]flag\f[R]
Passes \f[I]flag\f[R] directly to the Java Runtime Environment (JRE) that
runs the \f[CB]javadoc\f[R] tool.
For example, if you must ensure that the system sets aside 32 MB of
memory in which to process the generated documentation, then you would
call the \f[CB]\-Xmx\f[R] option as follows:
\f[CB]javadoc\ \-J\-Xmx32m\ \-J\-Xms32m\ com.mypackage\f[R].
Be aware that \f[CB]\-Xms\f[R] is optional because it only sets the size
of initial memory, which is useful when you know the minimum amount of
memory required.
.RS
.PP
There is no space between the \f[CB]J\f[R] and the \f[CB]flag\f[R].
.PP
Use the \f[CB]\-version\f[R] option to report the version of the JRE being
used to run the \f[CB]javadoc\f[R] tool.
.IP
.nf
\f[CB]
javadoc\ \-J\-version
java\ version\ "10\-ea"\ 2018\-03\-20
Java(TM)\ SE\ Runtime\ Environment\ 18.3\ (build\ 10\-ea+36)
Java\ HotSpot(TM)\ 64\-Bit\ Server\ VM\ 18.3\ (build\ 10\-ea+36,\ mixed\ mode)
\f[R]
.fi
.RE
.TP
.B \f[CB]\-locale\f[R] \f[I]name\f[R]
Specifies the locale that the \f[CB]javadoc\f[R] tool uses when it
generates documentation.
The argument is the name of the locale, as described in
\f[CB]java.util.Locale\f[R] documentation, such as \f[CB]en_US\f[R]
(English, United States) or \f[CB]en_US_WIN\f[R] (Windows variant).
.RS
.PP
\f[B]Note:\f[R]
.PP
The \f[CB]\-locale\f[R] option must be placed ahead (to the left) of any
options provided by the standard doclet or any other doclet.
Otherwise, the navigation bars appear in English.
This is the only command\-line option that depends on order.
.PP
Specifying a locale causes the \f[CB]javadoc\f[R] tool to choose the
resource files of that locale for messages such as strings in the
navigation bar, headings for lists and tables, help file contents,
comments in the \f[CB]stylesheet.css\f[R] file, and so on.
It also specifies the sorting order for lists sorted alphabetically, and
the sentence separator to determine the end of the first sentence.
The \f[CB]\-locale\f[R] option doesn\[aq]t determine the locale of the
documentation comment text specified in the source files of the
documented classes.
.RE
.TP
.B \f[CB]\-package\f[R]
Shows only package, protected, and public classes and members.
.RS
.RE
.TP
.B \f[CB]\-private\f[R]
Shows all classes and members.
.RS
.RE
.TP
.B \f[CB]\-protected\f[R]
Shows only protected and public classes and members.
This is the default.
.RS
.RE
.TP
.B \f[CB]\-public\f[R]
Shows only the public classes and members.
.RS
.RE
.TP
.B \f[CB]\-quiet\f[R]
Shuts off messages so that only the warnings and errors appear to make
them easier to view.
It also suppresses the \f[CB]version\f[R] string.
.RS
.RE
.TP
.B \f[CB]\-\-show\-members\f[R] \f[I]value\f[R]
Specifies which members (fields or methods) are documented, where
\f[I]value\f[R] can be any of the following:
.RS
.IP \[bu] 2
\f[CB]protected\f[R]: The default value is protected.
.IP \[bu] 2
\f[CB]public\f[R]: Shows only public values.
.IP \[bu] 2
\f[CB]package\f[R]: Shows public, protected, and package members.
.IP \[bu] 2
\f[CB]private\f[R]: Shows all members.
.RE
.TP
.B \f[CB]\-\-show\-module\-contents\f[R] \f[I]value\f[R]
Specifies the documentation granularity of module declarations, where
\f[I]value\f[R] can be \f[CB]api\f[R] or \f[CB]all\f[R].
.RS
.RE
.TP
.B \f[CB]\-\-show\-packages\f[R] \f[I]value\f[R]
Specifies which modules packages are documented, where \f[I]value\f[R]
can be \f[CB]exported\f[R] or \f[CB]all\f[R] packages.
.RS
.RE
.TP
.B \f[CB]\-\-show\-types\f[R] \f[I]value\f[R]
Specifies which types (classes, interfaces, etc.) are documented, where
\f[I]value\f[R] can be any of the following:
.RS
.IP \[bu] 2
\f[CB]protected\f[R]: The default value.
Shows public and protected types.
.IP \[bu] 2
\f[CB]public\f[R]: Shows only public values.
.IP \[bu] 2
\f[CB]package\f[R]: Shows public, protected, and package types.
.IP \[bu] 2
\f[CB]private\f[R]: Shows all types.
.RE
.TP
.B \f[CB]\-subpackages\f[R] \f[I]subpkglist\f[R]
Generates documentation from source files in the specified packages and
recursively in their subpackages.
This option is useful when adding new subpackages to the source code
because they are automatically included.
Each package argument is any top\-level subpackage (such as
\f[CB]java\f[R]) or fully qualified package (such as \f[CB]javax.swing\f[R])
that doesn\[aq]t need to contain source files.
Arguments are separated by colons on all operating systems.
Wild cards aren\[aq]t allowed.
Use \f[CB]\-sourcepath\f[R] to specify where to find the packages.
This option doesn\[aq]t process source files that are in the source tree
but don\[aq]t belong to the packages.
.RS
.PP
For example, the following commands generates documentation for packages
named \f[CB]java\f[R] and \f[CB]javax.swing\f[R] and all of their
subpackages.
.IP \[bu] 2
\f[B]Oracle Solaris, Linux, and OS X:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-d\ docs\ \-sourcepath\ /home/user/src\ \-subpackages\ java:javax.swing\f[R]
.RE
.RE
.IP \[bu] 2
\f[B]Windows:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-d\ docs\ \-sourcepath\ \\user\\src\ \-subpackages\ java:javax.swing\f[R]
.RE
.RE
.RE
.TP
.B \f[CB]\-verbose\f[R]
Provides more detailed messages while the \f[CB]javadoc\f[R] tool runs.
Without the \f[CB]\-verbose\f[R] option, messages appear for loading the
source files, generating the documentation (one message per source
file), and sorting.
The \f[CB]\-verbose\f[R] option causes the printing of additional messages
that specify the number of milliseconds to parse each Java source file.
.RS
.RE
.TP
.B \f[CB]\-\-version\f[R]
Prints version information.
.RS
.RE
.SH EXTENDED OPTIONS
.PP
\f[B]Note:\f[R]
.PP
The extended options for \f[CB]javadoc\f[R] are subject to change without
notice.
.PP
The following extended \f[CB]javadoc\f[R] options are equivalent to
corresponding \f[CB]javac\f[R] options.
See \f[I]Extra Options\f[R] in \f[B]javac\f[R] for the detailed
descriptions of using these options:
.IP \[bu] 2
\f[CB]\-\-add\-exports\f[R]
.IP \[bu] 2
\f[CB]\-\-add\-reads\f[R]
.IP \[bu] 2
\f[CB]\-\-patch\-module\f[R]
.IP \[bu] 2
\f[CB]\-Xmaxerrs\f[R]
.IP \[bu] 2
\f[CB]\-Xmaxwarns\f[R]
.PP
The following extended \f[CB]javadoc\f[R] options are not equivalent to a
corresponding \f[CB]javac\f[R] option:
.TP
.B \f[CB]\-Xmodule:\f[R]\f[I]module\-name\f[R]
Specifies a module to which the classes being compiled belong.
.RS
.RE
.TP
.B \f[CB]\-Xold\f[R]
Invokes the legacy javadoc tool.
.RS
.RE
.SH STANDARD DOCLET OPTIONS
.PP
The following options are provided by the standard doclet.
.TP
.B \f[CB]\-\-add\-stylesheet\f[R] \f[I]file\f[R]
Adds additional stylesheet file for the generated documentation.
This option can be used one or more times to specify additional
stylesheets included in the documentation.
.RS
.PP
Command\-line example:
.RS
.PP
\f[CB]javadoc\ \-\-add\-stylesheet\ new_stylesheet_1.css\ \-\-add\-stylesheet\ new_stylesheet_2.css\ pkg_foo\f[R]
.RE
.RE
.TP
.B \f[CB]\-\-allow\-script\-in\-comments\f[R]
Allow JavaScript in options and comments
.RS
.RE
.TP
.B \f[CB]\-author\f[R]
Includes the \f[CB]\@author\f[R] text in the generated docs.
.RS
.RE
.TP
.B \f[CB]\-bottom\f[R] \f[I]html\-code\f[R]
Specifies the text to be placed at the bottom of each output file.
The text is placed at the bottom of the page, underneath the lower
navigation bar.
The text can contain HTML tags and white space, but when it does, the
text must be enclosed in quotation marks.
Use escape characters for any internal quotation marks within text.
.RS
.RE
.TP
.B \f[CB]\-charset\f[R] \f[I]name\f[R]
Specifies the HTML character set for this document.
The name should be a preferred MIME name as specified in the \f[B]IANA
Registry, Character Sets\f[R]
[http://www.iana.org/assignments/character\-sets].
.RS
.PP
For example:
.RS
.PP
\f[CB]javadoc\ \-charset\ "iso\-8859\-1"\ mypackage\f[R]
.RE
.PP
This command inserts the following line in the head of every generated
page:
.RS
.PP
\f[CB]<META\ http\-equiv="Content\-Type"\ content="text/html;\ charset=ISO\-8859\-1">\f[R]
.RE
.PP
The \f[CB]META\f[R] tag is described in the \f[B]HTML standard (4197265
and 4137321), HTML Document Representation\f[R]
[http://www.w3.org/TR/REC\-html40/charset.html#h\-5.2.2].
.RE
.TP
.B \f[CB]\-d\f[R] \f[I]directory\f[R]
Specifies the destination directory where the \f[CB]javadoc\f[R] tool
saves the generated HTML files.
If you omit the \f[CB]\-d\f[R] option, then the files are saved to the
current directory.
The \f[CB]directory\f[R] value can be absolute or relative to the current
working directory.
The destination directory is automatically created when the
\f[CB]javadoc\f[R] tool runs.
.RS
.IP \[bu] 2
\f[B]Oracle Solaris, Linux, and OS X:\f[R] For example, the following
command generates the documentation for the package
\f[CB]com.mypackage\f[R] and saves the results in the \f[CB]/user/doc/\f[R]
directory:
.RS 2
.RS
.PP
\f[CB]javadoc\ \-d\ /user/doc/\ com.mypackage\f[R]
.RE
.RE
.IP \[bu] 2
\f[B]Windows:\f[R] For example, the following command generates the
documentation for the package \f[CB]com.mypackage\f[R] and saves the
results in the \f[CB]\\user\\doc\\\f[R] directory:
.RS 2
.RS
.PP
\f[CB]javadoc\ \-d\ \\user\\doc\\\ com.mypackage\f[R]
.RE
.RE
.RE
.TP
.B \f[CB]\-docencoding\f[R] \f[I]name\f[R]
Specifies the encoding of the generated HTML files.
The name should be a preferred MIME name as specified in the \f[B]IANA
Registry, Character Sets\f[R]
[http://www.iana.org/assignments/character\-sets].
.RS
.PP
Three options are available for use in a \f[CB]javadoc\f[R] encoding
command.
The \f[CB]\-encoding\f[R] option is used for encoding the files read by
the \f[CB]javadoc\f[R] tool, while the \f[CB]\-docencoding\f[R] and
\f[CB]\-charset\f[R] options are used for encoding the files written by
the tool.
Of the three available options, at most, only the input and an output
encoding option are used in a single encoding command.
If you specify both input and output encoding options in a command, they
must be the same value.
If you specify neither output option, it the tool defaults to the input
encoding.
.PP
For example:
.RS
.PP
\f[CB]javadoc\ \-docencoding\ "iso\-8859\-1"\ mypackage\f[R]
.RE
.RE
.TP
.B \f[CB]\-docfilessubdirs\f[R]
Recursively copies doc\-file subdirectories.
.RS
.RE
.TP
.B \f[CB]\-doctitle\f[R] \f[I]html\-code\f[R]
Specifies the title to place near the top of the overview summary file.
The text specified in the \f[CB]title\f[R] tag is placed as a centered,
level\-one heading directly beneath the top navigation bar.
The \f[CB]title\f[R] tag can contain HTML tags and white space, but when
it does, you must enclose the title in quotation marks.
Additional quotation marks within the \f[CB]title\f[R] tag must be
escaped.
For example,
\f[CB]javadoc\ \-header\ "<b>My\ Library</b><br>v1.0"\ com.mypackage.\f[R]
.RS
.RE
.TP
.B \f[CB]\-excludedocfilessubdir\f[R] \f[I]name\f[R]
Excludes any doc files sub directories with the given name.
Enables deep copying of doc\-files directories.
Subdirectories and all contents are recursively copied to the
destination.
For example, the directory \f[CB]doc\-files/example/images\f[R] and all of
its contents are copied.
There is also an option to exclude subdirectories.
.RS
.RE
.TP
.B \f[CB]\-footer\f[R] \f[I]html\-code\f[R]
Specifies the footer text to be placed at the bottom of each output
file.
The\f[CB]html\-code\f[R] value is placed to the right of the lower
navigation bar.
The \f[CB]html\-code\f[R] value can contain HTML tags and white space, but
when it does, the \f[CB]html\-code\f[R] value must be enclosed in
quotation marks.
Use escape characters for any internal quotation marks within a footer.
.RS
.RE
.TP
.B \f[CB]\-\-frames\f[R]
Enables the use of frames in the generated output (default).
.RS
.RE
.TP
.B \f[CB]\-group\f[R] \f[I]namep1\f[R]\f[CB]:\f[R]\f[I]p2\f[R]
Group the specified packages together in the Overview page.
.RS
.RE
.TP
.B \f[CB]\-header\f[R] \f[I]html\-code\f[R]
Specifies the header text to be placed at the top of each output file.
The header is placed to the right of the upper navigation bar.
The \f[CB]header\f[R] can contain HTML tags and white space, but when it
does, the \f[CB]header\f[R] must be enclosed in quotation marks.
Use escape characters for internal quotation marks within a header.
For example,
\f[CB]javadoc\ \-header\ "<b>My\ Library</b><br>v1.0"\ com.mypackage.\f[R]
.RS
.RE
.TP
.B \f[CB]\-helpfile\f[R] \f[I]filename\f[R]
Includes the file that links to the \f[B]HELP\f[R] link in the top and
bottom navigation bars .
Without this option, the \f[CB]javadoc\f[R] tool creates a help file
\f[CB]help\-doc.html\f[R] that is hard\-coded in the \f[CB]javadoc\f[R]
tool.
This option lets you override the default.
The \f[I]filename\f[R] can be any name and isn\[aq]t restricted to
\f[CB]help\-doc.html\f[R].
The \f[CB]javadoc\f[R] tool adjusts the links in the navigation bar
accordingly.
For example:
.RS
.IP \[bu] 2
\f[B]Oracle Solaris, Linux, and OS X:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-helpfile\ /home/user/myhelp.html\ java.awt.\f[R]
.RE
.RE
.IP \[bu] 2
\f[B]Windows:\f[R]
.RS 2
.RS
.PP
\f[CB]javadoc\ \-helpfile\ C:\\user\\myhelp.html\ java.awt.\f[R]
.RE
.RE
.RE
.TP
.B \f[CB]\-html4\f[R]
Generates HTML 4.0.1 output.
If the option is not used, \f[CB]\-html4\f[R] is the default
.RS
.RE
.TP
.B \f[CB]\-html5\f[R]
Generates HTML 5 output.
If the option is not used, \f[CB]\-html4\f[R] is the default.
.RS
.RE
.TP
.B \f[CB]\-\-javafx\f[R] or \f[CB]\-javafx\f[R]
Enables JavaFX functionality.
.RS
.RE
.TP
.B \f[CB]\-keywords\f[R]
Adds HTML keyword \f[CB]<META>\f[R] tags to the generated file for each
class.
These tags can help search engines that look for \f[CB]<META>\f[R] tags
find the pages.
Most search engines that search the entire Internet don\[aq]t look at
\f[CB]<META>\f[R] tags, because pages can misuse them.
Search engines offered by companies that confine their searches to their
own website can benefit by looking at \f[CB]<META>\f[R] tags.
The \f[CB]<META>\f[R] tags include the fully qualified name of the class
and the unqualified names of the fields and methods.
Constructors aren\[aq]t included because they are identical to the class
name.
For example, the class \f[CB]String\f[R] starts with these keywords:
.RS
.IP
.nf
\f[CB]
<META\ NAME="keywords"\ CONTENT="java.lang.String\ class">
<META\ NAME="keywords"\ CONTENT="CASE_INSENSITIVE_ORDER">
<META\ NAME="keywords"\ CONTENT="length()">
<META\ NAME="keywords"\ CONTENT="charAt()">
\f[R]
.fi
.RE
.TP
.B \f[CB]\-link\f[R] \f[I]url\f[R]
Creates links to existing \f[CB]javadoc\f[R] generated documentation of
externally referenced classes.
The \f[I]url\f[R] argument is the absolute or relative URL of the
directory that contains the external \f[CB]javadoc\f[R] generated
documentation.
You can specify multiple \f[CB]\-link\f[R] options in a specified
\f[CB]javadoc\f[R] tool run to link to multiple documents.
.RS
.PP
Either a \f[CB]package\-list\f[R] or an \f[CB]element\-list\f[R] file must
be in this \f[I]url\f[R] directory (otherwise, use the
\f[CB]\-linkoffline\f[R] option).
.PP
\f[B]Note:\f[R]
.PP
The \f[CB]package\-list\f[R] and \f[CB]element\-list\f[R] files are
generated by the \f[CB]javadoc\f[R] tool when generating the API
documentation and should not be modified by the user.
.PP
When you use the \f[CB]javadoc\f[R] tool to document packages, it uses the
\f[CB]package\-list\f[R] file to determine the packages declared in an
API.
When you generate API documents for modules, the \f[CB]javadoc\f[R] tool
uses the \f[CB]element\-list\f[R] file to determine the modules and
packages declared in an API.
.PP
The \f[CB]javadoc\f[R] tool reads the names from the appropriate list file
and then links to the packages or modules at that URL.
.PP
When the \f[CB]javadoc\f[R] tool runs, the \f[I]url\f[R] value is copied
into the \f[CB]<A\ HREF>\f[R] links that are created.
Therefore, \f[I]url\f[R] must be the URL to the directory and not to a
file.
.PP
You can use an absolute link for \f[I]url\f[R] to enable your documents
to link to a document on any web site, or you can use a relative link to
link only to a relative location.
If you use a relative link, then the value you pass in should be the
relative path from the destination directory (specified with the
\f[CB]\-d\f[R] option) to the directory containing the packages being
linked to.
When you specify an absolute link, you usually use an HTTP link.
However, if you want to link to a file system that has no web server,
then you can use a file link.
Use a file link only when everyone who wants to access the generated
documentation shares the same file system.
In all cases, and on all operating systems, use a slash as the
separator, whether the URL is absolute or relative, and \f[CB]https:\f[R],
\f[CB]http:\f[R], or \f[CB]file:\f[R] as specified in the \f[B]URL Memo:
Uniform Resource Locators\f[R] [http://www.ietf.org/rfc/rfc1738.txt].
.IP
.nf
\f[CB]
\-link\ https://<host>/<directory>/<directory>/.../<name>
\-link\ http://<host>/<directory>/<directory>/.../<name>
\-link\ file://<host>/<directory>/<directory>/.../<name>
\-link\ <directory>/<directory>/.../<name>
\f[R]
.fi
.RE
.TP
.B \f[CB]\-linkoffline\f[R] \f[I]url1\f[R] \f[I]url2\f[R]
This option is a variation of the \f[CB]\-link\f[R] option.
They both create links to \f[CB]javadoc\f[R] generated documentation for
externally referenced classes.
You can specify multiple \f[CB]\-linkoffline\f[R] options in a specified
\f[CB]javadoc\f[R] tool run.
.RS
.PP
Use the \f[CB]\-linkoffline\f[R] option when:
.IP \[bu] 2
Linking to a document on the web that the \f[CB]javadoc\f[R] tool
can\[aq]t access through a web connection
.IP \[bu] 2
The \f[CB]package\-list\f[R] or \f[CB]element\-list\f[R] file of the
external document either isn\[aq]t accessible or doesn\[aq]t exist at
the URL location, but does exist at a different location and can be
specified by either the \f[CB]package\-list\f[R] or \f[CB]element\-list\f[R]
file (typically local).
.PP
\f[B]Note:\f[R]
.PP
The \f[CB]package\-list\f[R] and \f[CB]element\-list\f[R] files are
generated by the \f[CB]javadoc\f[R] tool when generating the API
documentation and should not be modified by the user.
.PP
If \f[I]url1\f[R] is accessible only on the World Wide Web, then the
\f[CB]\-linkoffline\f[R] option removes the constraint that the
\f[CB]javadoc\f[R] tool must have a web connection to generate
documentation.
.PP
Another use of the \f[CB]\-linkoffline\f[R] option is as a work\-around to
update documents.
After you have run the \f[CB]javadoc\f[R] tool on a full set of packages
or modules, you can run the \f[CB]javadoc\f[R] tool again on a smaller set
of changed packages or modules, so that the updated files can be
inserted back into the original set.
.PP
For example, the \f[CB]\-linkoffline\f[R] option takes two arguments.
The first is for the string to be embedded in the \f[CB]<a\ href>\f[R]
links, and the second tells the \f[CB]javadoc\f[R] tool where to find
either the \f[CB]package\-list\f[R] or \f[CB]element\-list\f[R] file.
.PP
The \f[I]url1\f[R] or \f[I]url2\f[R] value is the absolute or relative URL
of the directory that contains the external \f[CB]javadoc\f[R] generated
documentation that you want to link to.
When relative, the value should be the relative path from the
destination directory (specified with the \f[CB]\-d\f[R] option) to the
root of the packages being linked to.
See \f[I]url\f[R] in the \f[CB]\-link\f[R] option.
.RE
.TP
.B \f[CB]\-linksource\f[R]
Creates an HTML version of each source file (with line numbers) and adds
links to them from the standard HTML documentation.
Links are created for classes, interfaces, constructors, methods, and
fields whose declarations are in a source file.
Otherwise, links aren\[aq]t created, such as for default constructors
and generated classes.
.RS
.PP
This option exposes all private implementation details in the included
source files, including private classes, private fields, and the bodies
of private methods, regardless of the \f[CB]\-public\f[R],
\f[CB]\-package\f[R], \f[CB]\-protected\f[R], and \f[CB]\-private\f[R]
options.
Unless you also use the \f[CB]\-private\f[R] option, not all private
classes or interfaces are accessible through links.
.PP
Each link appears on the name of the identifier in its declaration.
For example, the link to the source code of the \f[CB]Button\f[R] class
would be on the word \f[CB]Button\f[R]:
.RS
.PP
\f[CB]public\ class\ Button\ extends\ Component\ implements\ Accessible\f[R]
.RE
.PP
The link to the source code of the \f[CB]getLabel\f[R] method in the
\f[CB]Button\f[R] class is on the word \f[CB]getLabel\f[R]:
.RS
.PP
\f[CB]public\ String\ getLabel()\f[R]
.RE
.RE
.TP
.B \f[CB]\-\-main\-stylesheet\f[R] \f[I]file\f[R] or \f[CB]\-stylesheetfile\f[R] \f[I]file\f[R]
Specifies the path of an alternate stylesheet file that contains the
definitions for the CSS styles used in the generated documentation.
This option lets you override the default.
If you do not specify the option, the \f[CB]javadoc\f[R] tool will create
and use a default stylesheet.
The file name can be any name and isn\[aq]t restricted to
\f[CB]stylesheet.css\f[R].
The \f[CB]\-\-main\-stylesheet\f[R] option is the preferred form.
.RS
.PP
Command\-line example:
.RS
.PP
\f[CB]javadoc\ \-\-main\-stylesheet\ main_stylesheet.css\ pkg_foo\f[R]
.RE
.RE
.TP
.B \f[CB]\-nocomment\f[R]
Suppresses the entire comment body, including the main description and
all tags, and generate only declarations.
This option lets you reuse source files that were originally intended
for a different purpose so that you can produce skeleton HTML
documentation during the early stages of a new project.
.RS
.RE
.TP
.B \f[CB]\-nodeprecated\f[R]
Prevents the generation of any deprecated API in the documentation.
This does what the \f[CB]\-nodeprecatedlist\f[R] option does, and it
doesn\[aq]t generate any deprecated API throughout the rest of the
documentation.
This is useful when writing code when you don\[aq]t want to be
distracted by the deprecated code.
.RS
.RE
.TP
.B \f[CB]\-nodeprecatedlist\f[R]
Prevents the generation of the file that contains the list of deprecated
APIs (\f[CB]deprecated\-list.html\f[R]) and the link in the navigation bar
to that page.
The \f[CB]javadoc\f[R] tool continues to generate the deprecated API
throughout the rest of the document.
This is useful when your source code contains no deprecated APIs, and
you want to make the navigation bar cleaner.
.RS
.RE
.TP
.B \f[CB]\-\-no\-frames\f[R]
Disables the use of frames in the generated output.
.RS
.RE
.TP
.B \f[CB]\-nohelp\f[R]
Omits the HELP link in the navigation bars at the top and bottom of each
page of output.
.RS
.RE
.TP
.B \f[CB]\-noindex\f[R]
Omits the index from the generated documents.
The index is produced by default.
.RS
.RE
.TP
.B \f[CB]\-nonavbar\f[R]
Prevents the generation of the navigation bar, header, and footer, that
are usually found at the top and bottom of the generated pages.
The \f[CB]\-nonavbar\f[R] option has no affect on the \f[CB]\-bottom\f[R]
option.
The \f[CB]\-nonavbar\f[R] option is useful when you are interested only in
the content and have no need for navigation, such as when you are
converting the files to PostScript or PDF for printing only.
.RS
.RE
.TP
.B \f[CB]\-noqualifier\f[R] \f[I]name1\f[R]\f[CB]:\f[R]\f[I]name2\f[R]...
Excludes the list of qualifiers from the output.
The package name is removed from places where class or interface names
appear.
.RS
.PP
The following example omits all package qualifiers:
\f[CB]\-noqualifier\ all\f[R].
.PP
The following example omits \f[CB]java.lang\f[R] and \f[CB]java.io\f[R]
package qualifiers: \f[CB]\-noqualifier\ java.lang:java.io\f[R].
.PP
The following example omits package qualifiers starting with
\f[CB]java\f[R] and \f[CB]com.sun\f[R] subpackages, but not
\f[CB]javax:\ \-noqualifier\ java.*:com.sun.*\f[R].
.PP
Where a package qualifier would appear due to the previous behavior, the
name can be suitably shortened.
This rule is in effect whether or not the \f[CB]\-noqualifier\f[R] option
is used.
.RE
.TP
.B \f[CB]\-nosince\f[R]
Omits from the generated documents the \f[CB]Since\f[R] sections
associated with the \f[CB]\@since\f[R] tags.
.RS
.RE
.TP
.B \f[CB]\-notimestamp\f[R]
Suppresses the time stamp, which is hidden in an HTML comment in the
generated HTML near the top of each page.
The \f[CB]\-notimestamp\f[R] option is useful when you want to run the
\f[CB]javadoc\f[R] tool on two source bases and get the differences
between \f[CB]diff\f[R] them, because it prevents time stamps from causing
a \f[CB]diff\f[R] (which would otherwise be a \f[CB]diff\f[R] on every
page).
The time stamp includes the \f[CB]javadoc\f[R] tool release number.
.RS
.RE
.TP
.B \f[CB]\-notree\f[R]
Omits the class and interface hierarchy pages from the generated
documents.
These are the pages you reach using the Tree button in the navigation
bar.
The hierarchy is produced by default.
.RS
.RE
.TP
.B \f[CB]\-\-override\-methods\f[R] (\f[CB]detail\f[R]|\f[CB]summary\f[R])
Documents overridden methods in the detail or summary sections.
.RS
.RE
.TP
.B \f[CB]\-overview\f[R] \f[I]filename\f[R]
Specifies that the \f[CB]javadoc\f[R] tool should retrieve the text for
the overview documentation from the source file specified by
\f[CB]filename\f[R] and place it on the Overview page
(\f[CB]overview\-summary.html\f[R]).
A relative path specified with the file name is relative to the current
working directory.
.RS
.PP
While you can use any name you want for the \f[CB]filename\f[R] value and
place it anywhere you want for the path, it is typical to name it
\f[CB]overview.html\f[R] and place it in the source tree at the directory
that contains the topmost package directories.
In this location, no path is needed when documenting packages, because
the \f[CB]\-sourcepath\f[R] option points to this file.
.IP \[bu] 2
\f[B]Oracle Solaris, Linux, and OS X:\f[R] For example, if the source
tree for the \f[CB]java.lang\f[R] package is
\f[CB]/src/classes/java/lang/\f[R], then you could place the overview file
at /src/classes/overview.html.
.IP \[bu] 2
\f[B]Windows:\f[R] For example, if the source tree for the
\f[CB]java.lang\f[R] package is \f[CB]\\src\\classes\\java\\lang\\\f[R],
then you could place the overview file at
\f[CB]\\src\\classes\\overview.html\f[R]
.PP
The overview page is created only when you pass two or more package
names to the \f[CB]javadoc\f[R] tool.
The title on the overview page is set by \f[CB]\-doctitle\f[R].
.RE
.TP
.B \f[CB]\-serialwarn\f[R]
Generates compile\-time warnings for missing \f[CB]\@serial\f[R] tags.
By default, Javadoc generates no serial warnings.
Use this option to display the serial warnings, which helps to properly
document default serializable fields and \f[CB]writeExternal\f[R] methods.
.RS
.RE
.TP
.B \f[CB]\-sourcetab\f[R] \f[I]tablength\f[R]
Specifies the number of spaces each tab uses in the source.
.RS
.RE
.TP
.B \f[CB]\-splitindex\f[R]
Splits the index file into multiple files, alphabetically, one file per
letter, plus a file for any index entries that start with
non\-alphabetical symbols.
.RS
.RE
.TP
.B \f[CB]\-tag\f[R] \f[I]name\f[R]:\f[I]locations\f[R]:\f[I]header\f[R]
Specifies single argument custom tags.
For the \f[CB]javadoc\f[R] tool to spell\-check tag names, it is important
to include a \f[CB]\-tag\f[R] option for every custom tag that is present
in the source code, disabling (with \f[CB]X\f[R]) those that aren\[aq]t
being output in the current run.
The colon (\f[CB]:\f[R]) is always the separator.
The \f[CB]\-tag\f[R] option outputs the tag heading, \f[I]header\f[R], in
bold, followed on the next line by the text from its single argument.
Similar to any block tag, the argument text can contain inline tags,
which are also interpreted.
The output is similar to standard one\-argument tags, such as the
\f[CB]\@return\f[R] and \f[CB]\@author\f[R] tags.
Omitting a \f[I]header\f[R] value causes the \f[I]name\f[R] to be the
heading.
.RS
.RE
.TP
.B \f[CB]\-taglet\f[R] \f[I]class\f[R]
Specifies the fully qualified name of the taglet used in generating the
documentation for that tag.
Use the fully qualified name for the \f[I]class\f[R] value.
This taglet also defines the number of text arguments that the custom
tag has.
The taglet accepts those arguments, processes them, and generates the
output.
.RS
.PP
Taglets are useful for block or inline tags.
They can have any number of arguments and implement custom behavior,
such as making text bold, formatting bullets, writing out the text to a
file, or starting other processes.
Taglets can only determine where a tag should appear and in what form.
All other decisions are made by the doclet.
A taglet can\[aq]t do things such as remove a class name from the list
of included classes.
However, it can execute side effects, such as printing the tag\[aq]s
text to a file or triggering another process.
Use the \f[CB]\-tagletpath\f[R] option to specify the path to the taglet.
The following example inserts the To Do taglet after Parameters and
ahead of Throws in the generated pages.
.IP
.nf
\f[CB]
\-taglet\ com.sun.tools.doclets.ToDoTaglet
\-tagletpath\ /home/taglets
\-tag\ return
\-tag\ param
\-tag\ todo
\-tag\ throws
\-tag\ see
\f[R]
.fi
.PP
Alternately, you can use the \f[CB]\-taglet\f[R] option in place of its
\f[CB]\-tag\f[R] option, but that might be difficult to read.
.RE
.TP
.B \f[CB]\-tagletpath\f[R] \f[I]tagletpathlist\f[R]
Specifies the search paths for finding taglet class files.
The \f[I]tagletpathlist\f[R] can contain multiple paths by separating
them with a colon (\f[CB]:\f[R]).
The \f[CB]javadoc\f[R] tool searches all subdirectories of the specified
paths.
.RS
.RE
.TP
.B \f[CB]\-top\f[R] \f[I]html\-code\f[R]
Specifies the text to be placed at the top of each output file.
.RS
.RE
.TP
.B \f[CB]\-use\f[R]
Creates class and package usage pages.
Includes one Use page for each documented class and package.
The page describes what packages, classes, methods, constructors and
fields use any API of the specified class or package.
Given class C, things that use class C would include subclasses of C,
fields declared as C, methods that return C, and methods and
constructors with parameters of type C.
For example, you can look at the Use page for the \f[CB]String\f[R] type.
Because the \f[CB]getName\f[R] method in the \f[CB]java.awt.Font\f[R] class
returns type \f[CB]String\f[R], the \f[CB]getName\f[R] method uses
\f[CB]String\f[R] and so the \f[CB]getName\f[R] method appears on the Use
page for \f[CB]String\f[R].
This documents only uses of the API, not the implementation.
When a method uses \f[CB]String\f[R] in its implementation, but
doesn\[aq]t take a string as an argument or return a string, that
isn\[aq]t considered a use of \f[CB]String\f[R].To access the generated
Use page, go to the class or package and click the \f[B]Use link\f[R] in
the navigation bar.
.RS
.RE
.TP
.B \f[CB]\-version\f[R]
Includes the version text in the generated docs.
This text is omitted by default.
To find out what version of the \f[CB]javadoc\f[R] tool you are using, use
the \f[CB]\-J\-version\f[R] option.
.RS
.RE
.TP
.B \f[CB]\-windowtitle\f[R] \f[I]title\f[R]
Specifies the title to be placed in the HTML \f[CB]<title>\f[R] tag.
The text specified in the \f[CB]title\f[R] tag appears in the window title
and in any browser bookmarks (favorite places) that someone creates for
this page.
This title shouldn\[aq]t contain any HTML tags because the browser
doesn\[aq]t interpret them correctly.
Use escape characters on any internal quotation marks within the
\f[CB]title\f[R] tag.
If the \f[CB]\-windowtitle\f[R] option is omitted, then the
\f[CB]javadoc\f[R] tool uses the value of the \f[CB]\-doctitle\f[R] option
for the \f[CB]\-windowtitle\f[R] option.
For example,
\f[CB]javadoc\ \-windowtitle\ "My\ Library"\ com.mypackage\f[R].
.RS
.RE
.SH ADDITIONAL OPTIONS PROVIDED BY THE STANDARD DOCLET
.PP
The following are additional options provided by the standard doclet and
are subject to change without notice.
Additional options might are less commonly used or are otherwise
regarded as advanced.
.TP
.B \f[CB]\-Xdoclint\f[R]
Enables recommended checks for problems in Javadoc comments.
.RS
.RE
.TP
.B \f[CB]\-Xdoclint:\f[R](\f[CB]all\f[R]|\f[CB]none\f[R]|[\f[CB]\-\f[R]]\f[I]group\f[R])
Enable or disable specific checks for bad references, lack of

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