src/java.base/share/classes/sun/misc/URLClassPath.java

*** 618,628 ****
       */
      static class JarLoader extends Loader {
          private JarFile jar;
          private URL csu;
          private JarIndex index;
-         private MetaIndex metaIndex;
          private URLStreamHandler handler;
          private HashMap<String, Loader> lmap;
          private boolean closed = false;
          private static final JavaUtilZipFileAccess zipAccess =
                  SharedSecrets.getJavaUtilZipFileAccess();
--- 618,627 ----
*** 638,673 ****
              super(new URL("jar", "", -1, url + "!/", jarHandler));
              csu = url;
              handler = jarHandler;
              lmap = loaderMap;
  
-             if (!isOptimizable(url)) {
                  ensureOpen();
-             } else {
-                  String fileName = url.getFile();
-                 if (fileName != null) {
-                     fileName = ParseUtil.decode(fileName);
-                     File f = new File(fileName);
-                     metaIndex = MetaIndex.forJar(f);
-                     // If the meta index is found but the file is not
-                     // installed, set metaIndex to null. A typical
-                     // senario is charsets.jar which won't be installed
-                     // when the user is running in certain locale environment.
-                     // The side effect of null metaIndex will cause
-                     // ensureOpen get called so that IOException is thrown.
-                     if (metaIndex != null && !f.exists()) {
-                         metaIndex = null;
-                     }
-                 }
- 
-                 // metaIndex is null when either there is no such jar file
-                 // entry recorded in meta-index file or such jar file is
-                 // missing in JRE. See bug 6340399.
-                 if (metaIndex == null) {
-                     ensureOpen();
-                 }
-             }
          }
  
          @Override
          public void close () throws IOException {
              // closing is synchronized at higher level
--- 637,647 ----
*** 697,707 ****
                                      System.err.println("Opening " + csu);
                                      Thread.dumpStack();
                                  }
  
                                  jar = getJarFile(csu);
!                                 index = JarIndex.getJarIndex(jar, metaIndex);
                                  if (index != null) {
                                      String[] jarfiles = index.getJarFiles();
                                  // Add all the dependent URLs to the lmap so that loaders
                                  // will not be created for them by URLClassPath.getLoader(int)
                                  // if the same URL occurs later on the main class path.  We set
--- 671,681 ----
                                      System.err.println("Opening " + csu);
                                      Thread.dumpStack();
                                  }
  
                                  jar = getJarFile(csu);
!                                 index = JarIndex.getJarIndex(jar);
                                  if (index != null) {
                                      String[] jarfiles = index.getJarFiles();
                                  // Add all the dependent URLs to the lmap so that loaders
                                  // will not be created for them by URLClassPath.getLoader(int)
                                  // if the same URL occurs later on the main class path.  We set
*** 852,867 ****
  
          /*
           * Returns the JAR Resource for the specified name.
           */
          Resource getResource(final String name, boolean check) {
-             if (metaIndex != null) {
-                 if (!metaIndex.mayContain(name)) {
-                     return null;
-                 }
-             }
- 
              try {
                  ensureOpen();
              } catch (IOException e) {
                  throw new InternalError(e);
              }
--- 826,835 ----
*** 1000,1013 ****
          URL[] getClassPath() throws IOException {
              if (index != null) {
                  return null;
              }
  
-             if (metaIndex != null) {
-                 return null;
-             }
- 
              ensureOpen();
  
              if (SharedSecrets.javaUtilJarAccess().jarFileHasClassPathAttribute(jar)) { // Only get manifest when necessary
                  Manifest man = jar.getManifest();
                  if (man != null) {
--- 968,977 ----