test/hotspot/jtreg/runtime/appcds/TestCommon.java
branchJDK-8200758-branch
changeset 57588 dac8f245de8e
parent 57587 16c4975e9e09
parent 57586 f459f98aa30d
child 57591 6805e0ef7453
--- a/test/hotspot/jtreg/runtime/appcds/TestCommon.java	Mon Jul 29 18:31:18 2019 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,665 +0,0 @@
-/*
- * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-import jdk.test.lib.Utils;
-import jdk.test.lib.BuildHelper;
-import jdk.test.lib.JDKToolFinder;
-import jdk.test.lib.Platform;
-import jdk.test.lib.cds.CDSOptions;
-import jdk.test.lib.cds.CDSTestUtils;
-import jdk.test.lib.cds.CDSTestUtils.Result;
-import jdk.test.lib.process.ProcessTools;
-import jdk.test.lib.process.OutputAnalyzer;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.InputStream;
-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.text.SimpleDateFormat;
-import java.util.Arrays;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.Enumeration;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipFile;
-import java.util.zip.ZipOutputStream;
-import jtreg.SkippedException;
-import cdsutils.DynamicDumpHelper;
-
-
-/**
- * This is a test utility class for common AppCDS test functionality.
- *
- * Various methods use (String ...) for passing VM options. Note that the order
- * of the VM options are important in certain cases. Many methods take arguments like
- *
- *    (String prefix[], String suffix[], String... opts)
- *
- * Note that the order of the VM options is:
- *
- *    prefix + opts + suffix
- */
-public class TestCommon extends CDSTestUtils {
-    private static final String JSA_FILE_PREFIX = System.getProperty("user.dir") +
-        File.separator;
-
-    private static final SimpleDateFormat timeStampFormat =
-        new SimpleDateFormat("HH'h'mm'm'ss's'SSS");
-
-    private static final String timeoutFactor =
-        System.getProperty("test.timeout.factor", "1.0");
-
-    private static String currentArchiveName;
-
-    // Call this method to start new archive with new unique name
-    public static void startNewArchiveName() {
-        deletePriorArchives();
-        currentArchiveName = getNewArchiveName();
-    }
-
-    // Call this method to get current archive name
-    public static String getCurrentArchiveName() {
-        return currentArchiveName;
-    }
-
-    public static void setCurrentArchiveName(String archiveName) {
-        currentArchiveName = archiveName;
-    }
-
-    public static String getNewArchiveName() {
-        return getNewArchiveName(null);
-    }
-
-    public static String getNewArchiveName(String stem) {
-        if (stem == null) {
-            stem = "appcds";
-        }
-        return JSA_FILE_PREFIX + stem + "-" +
-            timeStampFormat.format(new Date()) + ".jsa";
-    }
-
-    // Attempt to clean old archives to preserve space
-    // Archives are large artifacts (20Mb or more), and much larger than
-    // most other artifacts created in jtreg testing.
-    // Therefore it is a good idea to clean the old archives when they are not needed.
-    // In most cases the deletion attempt will succeed; on rare occasion the
-    // delete operation will fail since the system or VM process still holds a handle
-    // to the file; in such cases the File.delete() operation will silently fail, w/o
-    // throwing an exception, thus allowing testing to continue.
-    public static void deletePriorArchives() {
-        File dir = new File(System.getProperty("user.dir"));
-        String files[] = dir.list();
-        for (String name : files) {
-            if (name.startsWith("appcds-") && name.endsWith(".jsa")) {
-                if (!(new File(dir, name)).delete())
-                    System.out.println("deletePriorArchives(): delete failed for file " + name);
-            }
-        }
-    }
-
-    // Create AppCDS archive using most common args - convenience method
-    // Legacy name preserved for compatibility
-    public static OutputAnalyzer dump(String appJar, String classList[],
-                                               String... suffix) throws Exception {
-        return createArchive(appJar, classList, suffix);
-    }
-
-    public static OutputAnalyzer dump(String appJarDir, String appJar, String classList[],
-                                               String... suffix) throws Exception {
-        return createArchive(appJarDir, appJar, classList, suffix);
-    }
-
-    // Create AppCDS archive using most common args - convenience method
-    public static OutputAnalyzer createArchive(String appJar, String classList[],
-                                               String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions()).setAppJar(appJar);
-        opts.setClassList(classList);
-        opts.addSuffix(suffix);
-        return createArchive(opts);
-    }
-
-    public static OutputAnalyzer createArchive(String appJarDir, String appJar, String classList[],
-                                               String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions()).setAppJar(appJar);
-        opts.setAppJarDir(appJarDir);
-        opts.setClassList(classList);
-        opts.addSuffix(suffix);
-        return createArchive(opts);
-    }
-
-    // Simulate -Xshare:dump with -XX:ArchiveClassesAtExit. See comments around patchJarForDynamicDump()
-    private static final Class tmp = DynamicDumpHelper.class;
-
-    // Create AppCDS archive using appcds options
-    public static OutputAnalyzer createArchive(AppCDSOptions opts)
-        throws Exception {
-        ArrayList<String> cmd = new ArrayList<String>();
-        startNewArchiveName();
-
-        for (String p : opts.prefix) cmd.add(p);
-
-        if (opts.appJar != null) {
-            cmd.add("-cp");
-            cmd.add(opts.appJar);
-            File jf = new File(opts.appJar);
-            if (DYNAMIC_DUMP && !jf.isDirectory()) {
-                patchJarForDynamicDump(opts.appJar);
-            }
-        } else {
-            cmd.add("-Djava.class.path=");
-        }
-
-        if (opts.archiveName == null) {
-            opts.archiveName = getCurrentArchiveName();
-        }
-
-        if (DYNAMIC_DUMP) {
-            cmd.add("-Xshare:on");
-            cmd.add("-XX:ArchiveClassesAtExit=" + opts.archiveName);
-
-            cmd.add("-Xlog:cds");
-            cmd.add("-Xlog:cds+dynamic");
-            boolean mainModuleSpecified = false;
-            boolean patchModuleSpecified = false;
-            for (String s : opts.suffix) {
-                if (s.length() == 0) {
-                    continue;
-                }
-                if (s.equals("-m")) {
-                    mainModuleSpecified = true;
-                }
-                if (s.startsWith("--patch-module=")) {
-                    patchModuleSpecified = true;
-                }
-                cmd.add(s);
-            }
-
-            if (opts.appJar != null) {
-                // classlist is supported only when we have a Jar file to patch (to insert
-                // cdsutils.DynamicDumpHelper)
-                if (opts.classList == null) {
-                    throw new RuntimeException("test.dynamic.dump requires classList file");
-                }
-
-                if (!mainModuleSpecified && !patchModuleSpecified) {
-                    cmd.add("cdsutils.DynamicDumpHelper");
-                    File classListFile = makeClassList(opts.classList);
-                    cmd.add(classListFile.getPath());
-                }
-            } else {
-                if (!mainModuleSpecified && !patchModuleSpecified) {
-                    // If you have an empty classpath, you cannot specify a classlist!
-                    if (opts.classList != null && opts.classList.length > 0) {
-                        throw new RuntimeException("test.dynamic.dump not supported empty classpath with non-empty classlist");
-                    }
-                    cmd.add("-version");
-                }
-            }
-        } else {
-            // static dump
-            cmd.add("-Xshare:dump");
-            cmd.add("-XX:SharedArchiveFile=" + opts.archiveName);
-
-            if (opts.classList != null) {
-                File classListFile = makeClassList(opts.classList);
-                cmd.add("-XX:ExtraSharedClassListFile=" + classListFile.getPath());
-            }
-            for (String s : opts.suffix) {
-                cmd.add(s);
-            }
-        }
-
-        String[] cmdLine = cmd.toArray(new String[cmd.size()]);
-        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine);
-        if (opts.appJarDir != null) {
-            pb.directory(new File(opts.appJarDir));
-        }
-        return executeAndLog(pb, "dump");
-    }
-
-    // This allows you to run the AppCDS tests with JFR enabled at runtime (though not at
-    // dump time, as that's uncommon for typical AppCDS users).
-    //
-    // To run in this special mode, add the following to your jtreg command-line
-    //    -Dtest.cds.run.with.jfr=true
-    //
-    // Some AppCDS tests are not compatible with this mode. See the group
-    // hotspot_appcds_with_jfr in ../../TEST.ROOT for details.
-    private static final boolean RUN_WITH_JFR = Boolean.getBoolean("test.cds.run.with.jfr");
-    // This method simulates -Xshare:dump with -XX:ArchiveClassesAtExit. This way, we
-    // can re-use many tests (outside of the ./dynamicArchive directory) for testing
-    // general features of JDK-8215311 (JEP 350: Dynamic CDS Archives).
-    //
-    // We insert the cdsutils/DynamicDumpHelper.class into the first Jar file in
-    // the classpath. We use this class to load all the classes specified in the classlist.
-    //
-    // There's no need to change the run-time command-line: in this special mode, two
-    // archives are involved. The command-line specifies only the top archive. However,
-    // the location of the base archive is recorded in the top archive, so it can be
-    // determined by the JVM at runtime start-up.
-    //
-    // To run in this special mode, specify the following in your jtreg command-line
-    //    -Dtest.dynamic.cds.archive=true
-    //
-    // Note that some tests are not compatible with this special mode, including
-    //    + Tests in ./dynamicArchive: these tests are specifically written for
-    //      dynamic archive, and do not use TestCommon.createArchive(), which works
-    //      together with patchJarForDynamicDump().
-    //    + Tests related to cached objects and shared strings: dynamic dumping
-    //      does not support these.
-    //    + Custom loader tests: DynamicDumpHelper doesn't support the required
-    //      classlist syntax. (FIXME).
-    //    + Extra symbols and extra strings.
-    // See the hotspot_appcds_dynamic in ../../TEST.ROOT for details.
-    //
-    // To run all tests that are compatible with this mode:
-    //    cd test/hotspot/jtreg
-    //    jtreg -Dtest.dynamic.cds.archive=true :hotspot_appcds_dynamic
-    //
-    private static void patchJarForDynamicDump(String cp) throws Exception {
-        System.out.println("patchJarForDynamicDump: classpath = " + cp);
-        String firstJar = cp;
-        int n = firstJar.indexOf(File.pathSeparator);
-        if (n > 0) {
-            firstJar = firstJar.substring(0, n);
-        }
-        String classDir = System.getProperty("test.classes");
-        String expected1 = classDir + File.separator;
-        String expected2 = System.getProperty("user.dir") + File.separator;
-
-        if (!firstJar.startsWith(expected1) && !firstJar.startsWith(expected2)) {
-            throw new RuntimeException("FIXME: jar file not at a supported location ('"
-                                       + expected1 + "', or '" + expected2 + "'): " + firstJar);
-        }
-
-        String replaceJar = firstJar + ".tmp";
-        String patchClass = "cdsutils/DynamicDumpHelper.class";
-        ZipFile zipFile = new ZipFile(firstJar);
-        byte[] buf = new byte[1024];
-        int len;
-        if (zipFile.getEntry(patchClass) == null) {
-            FileOutputStream fout = new FileOutputStream(replaceJar);
-            final ZipOutputStream zos = new ZipOutputStream(fout);
-
-            zos.putNextEntry(new ZipEntry(patchClass));
-            InputStream is = new FileInputStream(classDir + File.separator + patchClass);
-            while ((len = (is.read(buf))) > 0) {
-                zos.write(buf, 0, len);
-            }
-            zos.closeEntry();
-            is.close();
-
-            for (Enumeration e = zipFile.entries(); e.hasMoreElements(); ) {
-                ZipEntry entryIn = (ZipEntry) e.nextElement();
-                zos.putNextEntry(entryIn);
-                is = zipFile.getInputStream(entryIn);
-                while ((len = is.read(buf)) > 0) {
-                    zos.write(buf, 0, len);
-                }
-                zos.closeEntry();
-                is.close();
-            }
-
-            zos.close();
-            fout.close();
-            zipFile.close();
-
-            File oldFile = new File(firstJar);
-            File newFile = new File(replaceJar);
-            oldFile.delete();
-            newFile.renameTo(oldFile);
-            System.out.println("firstJar = " + firstJar + " Modified");
-        } else {
-            System.out.println("firstJar = " + firstJar);
-        }
-    }
-
-    // Execute JVM using AppCDS archive with specified AppCDSOptions
-    public static OutputAnalyzer runWithArchive(AppCDSOptions opts)
-        throws Exception {
-
-        ArrayList<String> cmd = new ArrayList<String>();
-
-        for (String p : opts.prefix) cmd.add(p);
-
-        cmd.add("-Xshare:" + opts.xShareMode);
-        cmd.add("-showversion");
-        cmd.add("-XX:SharedArchiveFile=" + getCurrentArchiveName());
-        cmd.add("-Dtest.timeout.factor=" + timeoutFactor);
-
-        if (opts.appJar != null) {
-            cmd.add("-cp");
-            cmd.add(opts.appJar);
-        }
-
-        for (String s : opts.suffix) cmd.add(s);
-
-        if (RUN_WITH_JFR) {
-            boolean usesJFR = false;
-            for (String s : cmd) {
-                if (s.startsWith("-XX:StartFlightRecording=") || s.startsWith("-XX:FlightRecorderOptions")) {
-                    System.out.println("JFR option might have been specified. Don't interfere: " + s);
-                    usesJFR = true;
-                    break;
-                }
-            }
-            if (!usesJFR) {
-                System.out.println("JFR option not specified. Enabling JFR ...");
-                cmd.add(0, "-XX:StartFlightRecording=dumponexit=true");
-                System.out.println(cmd);
-            }
-        }
-
-        String[] cmdLine = cmd.toArray(new String[cmd.size()]);
-        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine);
-        if (opts.appJarDir != null) {
-            pb.directory(new File(opts.appJarDir));
-        }
-        return executeAndLog(pb, "exec");
-    }
-
-
-    public static OutputAnalyzer execCommon(String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions());
-        opts.addSuffix(suffix);
-        return runWithArchive(opts);
-    }
-
-    // This is the new API for running a Java process with CDS enabled.
-    // See comments in the CDSTestUtils.Result class for how to use this method.
-    public static Result run(String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions());
-        opts.addSuffix(suffix);
-        return new Result(opts, runWithArchive(opts));
-    }
-
-    public static Result runWithRelativePath(String jarDir, String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions());
-        opts.setAppJarDir(jarDir);
-        opts.addSuffix(suffix);
-        return new Result(opts, runWithArchive(opts));
-    }
-
-    public static OutputAnalyzer exec(String appJar, String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions()).setAppJar(appJar);
-        opts.addSuffix(suffix);
-        return runWithArchive(opts);
-    }
-
-    public static Result runWithModules(String prefix[], String upgrademodulepath, String modulepath,
-                                            String mid, String... testClassArgs) throws Exception {
-        AppCDSOptions opts = makeModuleOptions(prefix, upgrademodulepath, modulepath,
-                                               mid, testClassArgs);
-        return new Result(opts, runWithArchive(opts));
-    }
-
-    public static OutputAnalyzer execAuto(String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions());
-        opts.addSuffix(suffix).setXShareMode("auto");
-        return runWithArchive(opts);
-    }
-
-    public static OutputAnalyzer execOff(String... suffix) throws Exception {
-        AppCDSOptions opts = (new AppCDSOptions());
-        opts.addSuffix(suffix).setXShareMode("off");
-        return runWithArchive(opts);
-    }
-
-
-    private static AppCDSOptions makeModuleOptions(String prefix[], String upgrademodulepath, String modulepath,
-                                            String mid, String testClassArgs[]) {
-        AppCDSOptions opts = (new AppCDSOptions());
-
-        opts.addPrefix(prefix);
-        if (upgrademodulepath == null) {
-            opts.addSuffix("-p", modulepath, "-m", mid);
-        } else {
-            opts.addSuffix("--upgrade-module-path", upgrademodulepath,
-                           "-p", modulepath, "-m", mid);
-        }
-        opts.addSuffix(testClassArgs);
-        return opts;
-    }
-
-    public static OutputAnalyzer execModule(String prefix[], String upgrademodulepath, String modulepath,
-                                            String mid, String... testClassArgs)
-        throws Exception {
-        AppCDSOptions opts = makeModuleOptions(prefix, upgrademodulepath, modulepath,
-                                               mid, testClassArgs);
-        return runWithArchive(opts);
-    }
-
-    // A common operation: dump, then check results
-    public static OutputAnalyzer testDump(String appJar, String classList[],
-                                          String... suffix) throws Exception {
-        OutputAnalyzer output = dump(appJar, classList, suffix);
-        if (DYNAMIC_DUMP) {
-            if (isUnableToMap(output)) {
-                throw new SkippedException(UnableToMapMsg);
-            }
-            output.shouldContain("Written dynamic archive");
-        } else {
-            output.shouldContain("Loading classes to share");
-        }
-        output.shouldHaveExitValue(0);
-        return output;
-    }
-
-    public static OutputAnalyzer testDump(String appJarDir, String appJar, String classList[],
-                                          String... suffix) throws Exception {
-        OutputAnalyzer output = dump(appJarDir, appJar, classList, suffix);
-        if (DYNAMIC_DUMP) {
-            if (isUnableToMap(output)) {
-                throw new SkippedException(UnableToMapMsg);
-            }
-            output.shouldContain("Written dynamic archive");
-        } else {
-            output.shouldContain("Loading classes to share");
-        }
-        output.shouldHaveExitValue(0);
-        return output;
-    }
-
-    /**
-     * Simple test -- dump and execute appJar with the given classList in classlist.
-     */
-    public static OutputAnalyzer test(String appJar, String classList[], String... args)
-        throws Exception {
-        testDump(appJar, classList);
-
-        OutputAnalyzer output = exec(appJar, args);
-        return checkExec(output);
-    }
-
-
-    public static OutputAnalyzer checkExecReturn(OutputAnalyzer output, int ret,
-                           boolean checkContain, String... matches) throws Exception {
-        try {
-            for (String s : matches) {
-                if (checkContain) {
-                    output.shouldContain(s);
-                } else {
-                    output.shouldNotContain(s);
-                }
-            }
-            output.shouldHaveExitValue(ret);
-        } catch (Exception e) {
-            checkCommonExecExceptions(output, e);
-        }
-
-        return output;
-    }
-
-    // Convenience concatenation utils
-    public static String[] list(String ...args) {
-        return args;
-    }
-
-
-    public static String[] list(String arg, int count) {
-        ArrayList<String> stringList = new ArrayList<String>();
-        for (int i = 0; i < count; i++) {
-            stringList.add(arg);
-        }
-
-        String outputArray[] = stringList.toArray(new String[stringList.size()]);
-        return outputArray;
-    }
-
-
-    public static String[] concat(String... args) {
-        return list(args);
-    }
-
-
-    public static String[] concat(String prefix[], String... extra) {
-        ArrayList<String> list = new ArrayList<String>();
-        for (String s : prefix) {
-            list.add(s);
-        }
-        for (String s : extra) {
-            list.add(s);
-        }
-
-        return list.toArray(new String[list.size()]);
-    }
-
-    public static String[] concat(String prefix, String[] extra) {
-        ArrayList<String> list = new ArrayList<String>();
-        list.add(prefix);
-        for (String s : extra) {
-            list.add(s);
-        }
-
-        return list.toArray(new String[list.size()]);
-    }
-
-    // ===================== Concatenate paths
-    public static String concatPaths(String... paths) {
-        String prefix = "";
-        String s = "";
-        for (String p : paths) {
-            s += prefix;
-            s += p;
-            prefix = File.pathSeparator;
-        }
-        return s;
-    }
-
-
-    public static String getTestJar(String jar) {
-        File jarFile = CDSTestUtils.getTestArtifact(jar, true);
-        if (!jarFile.isFile()) {
-            throw new RuntimeException("Not a regular file: " + jarFile.getPath());
-        }
-        return jarFile.getPath();
-    }
-
-
-    public static String getTestDir(String d) {
-        File dirFile = CDSTestUtils.getTestArtifact(d, true);
-        if (!dirFile.isDirectory()) {
-            throw new RuntimeException("Not a directory: " + dirFile.getPath());
-        }
-        return dirFile.getPath();
-    }
-
-    public static boolean checkOutputStrings(String outputString1,
-                                             String outputString2,
-                                             String split_regex) {
-        String[] sa1 = outputString1.split(split_regex);
-        String[] sa2 = outputString2.split(split_regex);
-        Arrays.sort(sa1);
-        Arrays.sort(sa2);
-
-        int i = 0;
-        for (String s : sa1) {
-            if (!s.equals(sa2[i])) {
-                throw new RuntimeException(s + " is different from " + sa2[i]);
-            }
-            i ++;
-        }
-        return true;
-    }
-
-    static Pattern pattern;
-
-    static void findAllClasses(ArrayList<String> list) throws Throwable {
-        // Find all the classes in the jrt file system
-        pattern = Pattern.compile("/modules/[a-z.]*[a-z]+/([^-]*)[.]class");
-        FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
-        Path base = fs.getPath("/modules/");
-        findAllClassesAtPath(base, list);
-    }
-
-    private static void findAllClassesAtPath(Path p, ArrayList<String> list) throws Throwable {
-        try (DirectoryStream<Path> stream = Files.newDirectoryStream(p)) {
-            for (Path entry: stream) {
-                Matcher matcher = pattern.matcher(entry.toString());
-                if (matcher.find()) {
-                    String className = matcher.group(1);
-                    list.add(className);
-                }
-                try {
-                    findAllClassesAtPath(entry, list);
-                } catch (Throwable t) {}
-            }
-        }
-    }
-
-    public static String composeRelPath(String appJar) {
-         int idx = appJar.lastIndexOf(File.separator);
-         String jarName = appJar.substring(idx + 1);
-         String jarDir = appJar.substring(0, idx);
-         String lastDir = jarDir.substring(jarDir.lastIndexOf(File.separator));
-         String relPath = jarDir + File.separator + ".." + File.separator + lastDir;
-         String newJar = relPath + File.separator + jarName;
-         return newJar;
-    }
-
-
-    public static File createSymLink(String appJar) throws Exception {
-         int idx = appJar.lastIndexOf(File.separator);
-         String jarName = appJar.substring(idx + 1);
-         String jarDir = appJar.substring(0, idx);
-         File origJar = new File(jarDir, jarName);
-         String linkedJarName = "linked_" + jarName;
-         File linkedJar = null;
-         if (!Platform.isWindows()) {
-             linkedJar = new File(jarDir, linkedJarName);
-             if (linkedJar.exists()) {
-                 linkedJar.delete();
-             }
-             Files.createSymbolicLink(linkedJar.toPath(), origJar.toPath());
-         }
-         return linkedJar;
-    }
-}