JDK 11 jdk.compiler.jmod is the JMOD file for JDK 11 Compiler tool, which can be invoked by the "javac" command.

JDK 11 Compiler tool compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.compiler.jmod.

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

JDK 11 Compiler source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.compiler.

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

⏎ com/sun/tools/javac/api/JavacTool.java

/*
 * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.tools.javac.api;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Writer;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Locale;
import java.util.Objects;
import java.util.Set;

import javax.lang.model.SourceVersion;
import javax.tools.*;

import com.sun.source.util.JavacTask;
import com.sun.tools.javac.file.JavacFileManager;
import com.sun.tools.javac.main.Arguments;
import com.sun.tools.javac.main.Option;
import com.sun.tools.javac.file.BaseFileManager;
import com.sun.tools.javac.file.CacheFSInfo;
import com.sun.tools.javac.jvm.Target;
import com.sun.tools.javac.util.ClientCodeException;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.DefinedBy;
import com.sun.tools.javac.util.DefinedBy.Api;
import com.sun.tools.javac.util.List;
import com.sun.tools.javac.util.Log;
import com.sun.tools.javac.util.PropagatedException;

/**
 * TODO: describe com.sun.tools.javac.api.Tool
 *
 * <p><b>This is NOT part of any supported API.
 * If you write code that depends on this, you do so at your own
 * risk.  This code and its internal interfaces are subject to change
 * or deletion without notice.</b></p>
 *
 * @author Peter von der Ah\u00e9
 */
public final class JavacTool implements JavaCompiler {
    /**
     * Constructor used by service provider mechanism.  The recommended way to
     * obtain an instance of this class is by using {@link #create} or the
     * service provider mechanism.
     * @see javax.tools.JavaCompiler
     * @see javax.tools.ToolProvider
     * @see #create
     */
    @Deprecated
    public JavacTool() {}

    // @Override // can't add @Override until bootstrap JDK provides Tool.name()
    @DefinedBy(Api.COMPILER)
    public String name() {
        return "javac";
    }

    /**
     * Static factory method for creating new instances of this tool.
     * @return new instance of this tool
     */
    public static JavacTool create() {
        return new JavacTool();
    }

    @Override @DefinedBy(Api.COMPILER)
    public JavacFileManager getStandardFileManager(
        DiagnosticListener<? super JavaFileObject> diagnosticListener,
        Locale locale,
        Charset charset) {
        Context context = new Context();
        context.put(Locale.class, locale);
        if (diagnosticListener != null)
            context.put(DiagnosticListener.class, diagnosticListener);
        PrintWriter pw = (charset == null)
                ? new PrintWriter(System.err, true)
                : new PrintWriter(new OutputStreamWriter(System.err, charset), true);
        context.put(Log.errKey, pw);
        CacheFSInfo.preRegister(context);
        return new JavacFileManager(context, true, charset);
    }

    @Override @DefinedBy(Api.COMPILER)
    public JavacTask getTask(Writer out,
                             JavaFileManager fileManager,
                             DiagnosticListener<? super JavaFileObject> diagnosticListener,
                             Iterable<String> options,
                             Iterable<String> classes,
                             Iterable<? extends JavaFileObject> compilationUnits) {
        Context context = new Context();
        return getTask(out, fileManager, diagnosticListener,
                options, classes, compilationUnits,
                context);
    }

    /* Internal version of getTask, allowing context to be provided. */
    public JavacTask getTask(Writer out,
                             JavaFileManager fileManager,
                             DiagnosticListener<? super JavaFileObject> diagnosticListener,
                             Iterable<String> options,
                             Iterable<String> classes,
                             Iterable<? extends JavaFileObject> compilationUnits,
                             Context context)
    {
        try {
            ClientCodeWrapper ccw = ClientCodeWrapper.instance(context);

            if (options != null) {
                for (String option : options)
                    Objects.requireNonNull(option);
            }

            if (classes != null) {
                for (String cls : classes) {
                    int sep = cls.indexOf('/'); // implicit null check
                    if (sep > 0) {
                        String mod = cls.substring(0, sep);
                        if (!SourceVersion.isName(mod))
                            throw new IllegalArgumentException("Not a valid module name: " + mod);
                        cls = cls.substring(sep + 1);
                    }
                    if (!SourceVersion.isName(cls))
                        throw new IllegalArgumentException("Not a valid class name: " + cls);
                }
            }

            if (compilationUnits != null) {
                compilationUnits = ccw.wrapJavaFileObjects(compilationUnits); // implicit null check
                for (JavaFileObject cu : compilationUnits) {
                    if (cu.getKind() != JavaFileObject.Kind.SOURCE) {
                        String kindMsg = "Compilation unit is not of SOURCE kind: "
                                + "\"" + cu.getName() + "\"";
                        throw new IllegalArgumentException(kindMsg);
                    }
                }
            }

            if (diagnosticListener != null)
                context.put(DiagnosticListener.class, ccw.wrap(diagnosticListener));

            if (out == null)
                context.put(Log.errKey, new PrintWriter(System.err, true));
            else
                context.put(Log.errKey, new PrintWriter(out, true));

            if (fileManager == null) {
                fileManager = getStandardFileManager(diagnosticListener, null, null);
                if (fileManager instanceof BaseFileManager) {
                    ((BaseFileManager) fileManager).autoClose = true;
                }
            }
            fileManager = ccw.wrap(fileManager);

            context.put(JavaFileManager.class, fileManager);

            Arguments args = Arguments.instance(context);
            args.init("javac", options, classes, compilationUnits);

            // init multi-release jar handling
            if (fileManager.isSupportedOption(Option.MULTIRELEASE.primaryName) == 1) {
                Target target = Target.instance(context);
                List<String> list = List.of(target.multiReleaseValue());
                fileManager.handleOption(Option.MULTIRELEASE.primaryName, list.iterator());
            }

            return new JavacTaskImpl(context);
        } catch (PropagatedException ex) {
            throw ex.getCause();
        } catch (ClientCodeException ex) {
            throw new RuntimeException(ex.getCause());
        }
    }

    @Override @DefinedBy(Api.COMPILER)
    public int run(InputStream in, OutputStream out, OutputStream err, String... arguments) {
        if (err == null)
            err = System.err;
        for (String argument : arguments)
            Objects.requireNonNull(argument);
        return com.sun.tools.javac.Main.compile(arguments, new PrintWriter(err, true));
    }

    @Override @DefinedBy(Api.COMPILER)
    public Set<SourceVersion> getSourceVersions() {
        return Collections.unmodifiableSet(EnumSet.range(SourceVersion.RELEASE_3,
                                                         SourceVersion.latest()));
    }

    @Override @DefinedBy(Api.COMPILER)
    public int isSupportedOption(String option) {
        Set<Option> recognizedOptions = Option.getJavacToolOptions();
        for (Option o : recognizedOptions) {
            if (o.matches(option)) {
                return o.hasSeparateArg() ? 1 : 0;
            }
        }
        return -1;
    }

}

⏎ com/sun/tools/javac/api/JavacTool.java

Or download all of them as a single archive file:

File name: jdk.compiler-11.0.1-src.zip
File size: 1347269 bytes
Release date: 2018-11-04
Download 

⇒ JDK 11 jdk.crypto.cryptoki.jmod - Crypto KI Module

⇐ JDK 11 jdk.charsets.jmod - Charsets Module

⇑ Download and Use JDK 11

⇑⇑ FAQ for JDK (Java Development Kit)