JDK 11 jdk.rmic.jmod is the JMOD file for JDK 11 RMI (Remote Method Invocation) Compiler Tool tool, which can be invoked by the "rmic" command.

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

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

JDK 11 RMI Compiler Tool tool source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.rmic.

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

⏎ sun/tools/java/ClassPath.java

/*
 * Copyright (c) 1994, 2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package sun.tools.java;

import java.io.File;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.util.zip.*;
import java.util.Enumeration;
import java.util.Map;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Set;
import java.util.LinkedHashSet;
import java.net.URI;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.ProviderNotFoundException;
import java.nio.file.spi.FileSystemProvider;

/**
 * This class is used to represent a class path, which can contain both
 * directories and zip files.
 *
 * WARNING: The contents of this source file are not part of any
 * supported API.  Code that depends on them does so at its own risk:
 * they are subject to change or removal without notice.
 */
public
class ClassPath {
    private FileSystem getJrtFileSystem() {
        return FileSystems.getFileSystem(URI.create("jrt:/"));
    }

    static final char dirSeparator = File.pathSeparatorChar;

    /**
     * The original class path string
     */
    String pathstr;

    /**
     * List of class path entries
     */
    private ClassPathEntry[] path;

    /**
     * Build a class path from the specified path string
     */
    public ClassPath(String pathstr) {
        init(pathstr);
    }

    /**
     * Build a class path from the specified array of class path
     * element strings.  This constructor, and the corresponding
     * "init" method, were added as part of the fix for 6473331, which
     * adds support for Class-Path manifest entries in JAR files to
     * rmic.  It is conceivable that the value of a Class-Path
     * manifest entry will contain a path separator, which would cause
     * incorrect behavior if the expanded path were passed to the
     * previous constructor as a single path-separator-delimited
     * string; use of this constructor avoids that problem.
     */
    public ClassPath(String[] patharray) {
        init(patharray);
    }

    /**
     * Build a default class path from the path strings specified by
     * the properties sun.boot.class.path and env.class.path, in that
     * order.
     */
    public ClassPath() {
        // though this property is removed. Check for null and use only
        // if it is not null (when bootstrap JDK is used).
        String syscp = System.getProperty("sun.boot.class.path");
        String envcp = System.getProperty("env.class.path");
        if (envcp == null) envcp = ".";

        // add syscp only if not null!
        String cp = syscp == null? envcp : (syscp + File.pathSeparator + envcp);
        init(cp);
    }

    private void init(String pathstr) {
        int i, j, n;
        // Save original class path string
        this.pathstr = pathstr;

        if (pathstr.length() == 0) {
            this.path = new ClassPathEntry[0];
        }

        // Count the number of path separators
        i = n = 0;
        while ((i = pathstr.indexOf(dirSeparator, i)) != -1) {
            n++; i++;
        }
        // Build the class path
        ClassPathEntry[] path = new ClassPathEntry[n+1];

        int len = pathstr.length();
        for (i = n = 0; i < len; i = j + 1) {
            if ((j = pathstr.indexOf(dirSeparator, i)) == -1) {
                j = len;
            }
            if (i == j) {
                path[n++] = new DirClassPathEntry(new File("."));
            } else {
                String filename = pathstr.substring(i, j);
                File file = new File(filename);
                if (file.isFile()) {
                    try {
                        ZipFile zip = new ZipFile(file);
                        path[n++] = new ZipClassPathEntry(zip);
                    } catch (ZipException e) {
                    } catch (IOException e) {
                        // Ignore exceptions, at least for now...
                    }
                } else {
                    path[n++] = new DirClassPathEntry(file);
                }
            }
        }

        // add jrt file system at the end
        try {
            FileSystem fs = getJrtFileSystem();
            path[n++] = new JrtClassPathEntry(fs);
        } catch (ProviderNotFoundException ignored) {
            // this could happen during jdk build with earlier JDK as bootstrap
        }

        // Trim class path to exact size
        this.path = new ClassPathEntry[n];
        System.arraycopy((Object)path, 0, (Object)this.path, 0, n);
    }

    private void init(String[] patharray) {
        // Save original class path string
        if (patharray.length == 0) {
            this.pathstr = "";
        } else {
            StringBuilder sb = new StringBuilder(patharray[0]);
            for (int i = 1; i < patharray.length; i++) {
                sb.append(File.pathSeparatorChar);
                sb.append(patharray[i]);
            }
            this.pathstr = sb.toString();
        }

        // Build the class path
        ClassPathEntry[] path = new ClassPathEntry[patharray.length + 1];
        int n = 0;
        for (String name : patharray) {
            File file = new File(name);
            if (file.isFile()) {
                try {
                    ZipFile zip = new ZipFile(file);
                    path[n++] = new ZipClassPathEntry(zip);
                } catch (ZipException e) {
                } catch (IOException e) {
                    // Ignore exceptions, at least for now...
                }
            } else {
                path[n++] = new DirClassPathEntry(file);
            }
        }

        // add jrt file system at the end
        try {
            FileSystem fs = getJrtFileSystem();
            path[n++] = new JrtClassPathEntry(fs);
        } catch (ProviderNotFoundException ignored) {
            // this could happen with earlier version of JDK used as bootstrap
        }

        // Trim class path to exact size
        this.path = new ClassPathEntry[n];
        System.arraycopy((Object)path, 0, (Object)this.path, 0, n);
    }

    /**
     * Find the specified directory in the class path
     */
    public ClassFile getDirectory(String name) {
        return getFile(name, true);
    }

    /**
     * Load the specified file from the class path
     */
    public ClassFile getFile(String name) {
        return getFile(name, false);
    }

    private final String fileSeparatorChar = "" + File.separatorChar;

    private ClassFile getFile(String name, boolean isDirectory) {
        String subdir = name;
        String basename = "";
        if (!isDirectory) {
            int i = name.lastIndexOf(File.separatorChar);
            subdir = name.substring(0, i + 1);
            basename = name.substring(i + 1);
        } else if (!subdir.equals("")
                   && !subdir.endsWith(fileSeparatorChar)) {
            // zip files are picky about "foo" vs. "foo/".
            // also, the getFiles caches are keyed with a trailing /
            subdir = subdir + File.separatorChar;
            name = subdir;      // Note: isDirectory==true & basename==""
        }
        for (int i = 0; i < path.length; i++) {
            ClassFile cf = path[i].getFile(name, subdir, basename, isDirectory);
            if (cf != null) {
                return cf;
            }
        }
        return null;
    }

    /**
     * Returns list of files given a package name and extension.
     */
    public Enumeration<ClassFile> getFiles(String pkg, String ext) {
        Hashtable<String, ClassFile> files = new Hashtable<>();
        for (int i = path.length; --i >= 0; ) {
            path[i].fillFiles(pkg, ext, files);
        }
        return files.elements();
    }

    /**
     * Release resources.
     */
    public void close() throws IOException {
        for (int i = path.length; --i >= 0; ) {
            path[i].close();
        }
    }

    /**
     * Returns original class path string
     */
    public String toString() {
        return pathstr;
    }
}

/**
 * A class path entry, which can either be a directory or an open zip file or an open jimage filesystem.
 */
abstract class ClassPathEntry {
    abstract ClassFile getFile(String name, String subdir, String basename, boolean isDirectory);
    abstract void fillFiles(String pkg, String ext, Hashtable<String, ClassFile> files);
    abstract void close() throws IOException;
}

// a ClassPathEntry that represents a directory
final class DirClassPathEntry extends ClassPathEntry {
    private final File dir;

    DirClassPathEntry(File dir) {
        this.dir = dir;
    }

    private final Hashtable<String, String[]> subdirs = new Hashtable<>(29); // cache of sub-directory listings:
    private String[] getFiles(String subdir) {
        String files[] = subdirs.get(subdir);
        if (files == null) {
            files = computeFiles(subdir);
            subdirs.put(subdir, files);
        }
        return files;
    }

    private String[] computeFiles(String subdir) {
        File sd = new File(dir.getPath(), subdir);
        String[] files = null;
        if (sd.isDirectory()) {
            files = sd.list();
            if (files == null) {
                // should not happen, but just in case, fail silently
                files = new String[0];
            }
            if (files.length == 0) {
                String nonEmpty[] = { "" };
                files = nonEmpty;
            }
        } else {
            files = new String[0];
        }
        return files;
    }

    ClassFile getFile(String name,  String subdir, String basename, boolean isDirectory) {
        File file = new File(dir.getPath(), name);
        String list[] = getFiles(subdir);
        if (isDirectory) {
            if (list.length > 0) {
                return ClassFile.newClassFile(file);
            }
        } else {
            for (int j = 0; j < list.length; j++) {
                if (basename.equals(list[j])) {
                    // Don't bother checking !file.isDir,
                    // since we only look for names which
                    // cannot already be packages (foo.java, etc).
                    return ClassFile.newClassFile(file);
                }
            }
        }
        return null;
    }

    void fillFiles(String pkg, String ext, Hashtable<String, ClassFile> files) {
        String[] list = getFiles(pkg);
        for (int j = 0; j < list.length; j++) {
            String name = list[j];
            if (name.endsWith(ext)) {
                name = pkg + File.separatorChar + name;
                File file = new File(dir.getPath(), name);
                files.put(name, ClassFile.newClassFile(file));
            }
        }
    }

    void close() throws IOException {
    }
}

// a ClassPathEntry that represents a .zip or a .jar file
final class ZipClassPathEntry extends ClassPathEntry {
    private final ZipFile zip;

    ZipClassPathEntry(ZipFile zip) {
        this.zip = zip;
    }

    void close() throws IOException {
        zip.close();
    }

    ClassFile getFile(String name, String subdir, String basename, boolean isDirectory) {
        String newname = name.replace(File.separatorChar, '/');
        ZipEntry entry = zip.getEntry(newname);
        return entry != null? ClassFile.newClassFile(zip, entry) : null;
    }

    void fillFiles(String pkg, String ext, Hashtable<String, ClassFile> files) {
        Enumeration<? extends ZipEntry> e = zip.entries();
        while (e.hasMoreElements()) {
            ZipEntry entry = (ZipEntry)e.nextElement();
            String name = entry.getName();
            name = name.replace('/', File.separatorChar);
            if (name.startsWith(pkg) && name.endsWith(ext)) {
                files.put(name, ClassFile.newClassFile(zip, entry));
            }
        }
    }
}

// a ClassPathEntry that represents jrt file system
final class JrtClassPathEntry extends ClassPathEntry {
    private final FileSystem fs;
    // package name to package directory path mapping (lazily filled)
    private final Map<String, Path> pkgDirs;

    JrtClassPathEntry(FileSystem fs) {
        this.fs = fs;
        this.pkgDirs = new HashMap<>();
    }

    void close() throws IOException {
    }

    // from pkgName (internal separator '/') to it's Path in jrtfs
    synchronized Path getPackagePath(String pkgName) throws IOException {
        // check the cache first
        if (pkgDirs.containsKey(pkgName)) {
            return pkgDirs.get(pkgName);
        }

        Path pkgLink = fs.getPath("/packages/" + pkgName.replace('/', '.'));
        // check if /packages/$PACKAGE directory exists
        if (Files.isDirectory(pkgLink)) {
           try (DirectoryStream<Path> stream = Files.newDirectoryStream(pkgLink)) {
                for (Path p : stream) {
                    // find first symbolic link to module directory
                    if (Files.isSymbolicLink(p)) {
                        Path modDir = Files.readSymbolicLink(p);
                        if (Files.isDirectory(modDir)) {
                            // get package subdirectory under /modules/$MODULE/
                            Path pkgDir = fs.getPath(modDir.toString() + "/" + pkgName);
                            if (Files.isDirectory(pkgDir)) {
                                // it is a package directory only if contains
                                // at least one .class file
                                try (DirectoryStream<Path> pstream =
                                        Files.newDirectoryStream(pkgDir)) {
                                    for (Path f : pstream) {
                                        if (Files.isRegularFile(f)
                                                && f.toString().endsWith(".class")) {
                                            pkgDirs.put(pkgName, pkgDir);
                                            return pkgDir;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }

        return null;
    }

    // fully qualified (internal) class name to it's Path in jrtfs
    Path getClassPath(String clsName) throws IOException {
        int index = clsName.lastIndexOf('/');
        if (index == -1) {
            return null;
        }
        Path pkgPath = getPackagePath(clsName.substring(0, index));
        return pkgPath == null? null : fs.getPath(pkgPath + "/" + clsName.substring(index + 1));
    }

    ClassFile getFile(String name, String subdir, String basename, boolean isDirectory) {
        try {
            name = name.replace(File.separatorChar, '/');
            Path cp = getClassPath(name);
            return cp == null? null : ClassFile.newClassFile(cp);
        } catch (IOException ioExp) {
            throw new UncheckedIOException(ioExp);
        }
    }

    void fillFiles(String pkg, String ext, Hashtable<String, ClassFile> files) {
        Path dir;
        try {
            dir = getPackagePath(pkg);
            if (dir == null) {
                return;
            }
        } catch (IOException ioExp) {
            throw new UncheckedIOException(ioExp);
        }

        try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
            for (Path p : stream) {
                String name = p.toString();
                name = name.replace('/', File.separatorChar);
                if (name.startsWith(pkg) && name.endsWith(ext)) {
                    files.put(name, ClassFile.newClassFile(p));
                }
            }
        } catch (IOException ioExp) {
            throw new UncheckedIOException(ioExp);
        }
    }
}

⏎ sun/tools/java/ClassPath.java

Or download all of them as a single archive file:

File name: jdk.rmic-11.0.1-src.zip
File size: 418901 bytes
Release date: 2018-11-04
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