JDK 11 jdk.javadoc.jmod is the JMOD file for JDK 11 Java Document tool, which can be invoked by the "javadoc" command.

JDK 11 Java Document tool compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.javadoc.jmod.

JDK 11 Java Document tool compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Java Document tool source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.javadoc.

You can click and view the content of each source code file in the list below.

⏎ com/sun/javadoc/Doclet.java

/*
 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package com.sun.javadoc;

/**
 * This is an example of a starting class for a doclet,
 * showing the entry-point methods.  A starting class must
 * import com.sun.javadoc.* and implement the
 * {@code start(RootDoc)} method, as described in the
 * <a href="package-summary.html#package.description">package
 * description</a>.  If the doclet takes command line options,
 * it must also implement {@code optionLength} and
 * {@code validOptions}.
 *
 * <p> A doclet supporting the language features added since 1.1
 * (such as generics and annotations) should indicate this
 * by implementing {@code languageVersion}.  In the absence of
 * this the doclet should not invoke any of the Doclet API methods
 * added since 1.5, and
 * the results of several other methods are modified so as
 * to conceal the new constructs (such as type parameters) from
 * the doclet.
 *
 * <p> To start the doclet, pass
 * {@code -doclet} followed by the fully-qualified
 * name of the starting class on the javadoc tool command line.
 *
 * @deprecated
 *   The declarations in this package have been superseded by those
 *   in the package {@code jdk.javadoc.doclet}.
 *   For more information, see the <i>Migration Guide</i> in the documentation for that package.
 */
@Deprecated(since="9", forRemoval=true)
@SuppressWarnings("removal")
public abstract class Doclet {

    /**
     * Generate documentation here.
     * This method is required for all doclets.
     *
     * @param root Supply the RootDoc to the method.
     * @return true on success.
     */
    public static boolean start(RootDoc root) {
        return true;
    }

    /**
     * Check for doclet-added options.  Returns the number of
     * arguments you must specify on the command line for the
     * given option.  For example, "-d docs" would return 2.
     * <P>
     * This method is required if the doclet contains any options.
     * If this method is missing, Javadoc will print an invalid flag
     * error for every option.
     *
     * @param option the option for which the number of arguements is returned.
     * @return number of arguments on the command line for an option
     *         including the option name itself.  Zero return means
     *         option not known.  Negative value means error occurred.
     */
    public static int optionLength(String option) {
        return 0;  // default is option unknown
    }

    /**
     * Check that options have the correct arguments.
     * <P>
     * This method is not required, but is recommended,
     * as every option will be considered valid if this method
     * is not present.  It will default gracefully (to true)
     * if absent.
     * <P>
     * Printing option related error messages (using the provided
     * DocErrorReporter) is the responsibility of this method.
     *
     * @param options Supply valid options as an array of Strings.
     * @param reporter The DocErrorReporter responsible for these options.
     * @return true if the options are valid.
     */
    public static boolean validOptions(String options[][],
                                       DocErrorReporter reporter) {
        return true;  // default is options are valid
    }

    /**
     * Return the version of the Java Programming Language supported
     * by this doclet.
     * <p>
     * This method is required by any doclet supporting a language version
     * newer than 1.1.
     *
     * @return  the language version supported by this doclet.
     * @since 1.5
     */
    public static LanguageVersion languageVersion() {
        return LanguageVersion.JAVA_1_1;
    }
}

⏎ com/sun/javadoc/Doclet.java

Or download all of them as a single archive file:

File name: jdk.javadoc-11.0.1-src.zip
File size: 680806 bytes
Release date: 2018-11-04
Download 

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