--- a/src/java.base/share/classes/java/util/zip/ZStreamRef.java	Fri Dec 15 14:26:23 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,113 +0,0 @@
-/*
- * Copyright (c) 2009, 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.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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.
- */
-
-package java.util.zip;
-
-import java.util.function.LongConsumer;
-import java.util.function.LongSupplier;
-import java.lang.ref.Cleaner.Cleanable;
-import jdk.internal.ref.CleanerFactory;
-
-/**
- * A reference to the native zlib's z_stream structure. It also
- * serves as the "cleaner" to clean up the native resource when
- * the deflater or infalter is ended, closed or cleaned.
- */
-class ZStreamRef implements Runnable {
-
-    private LongConsumer end;
-    private long address;
-    private final Cleanable cleanable;
-
-    private ZStreamRef (Object owner, LongSupplier addr, LongConsumer end) {
-        this.cleanable = CleanerFactory.cleaner().register(owner, this);
-        this.end = end;
-        this.address = addr.getAsLong();
-    }
-
-    long address() {
-        return address;
-    }
-
-    void clean() {
-        cleanable.clean();
-    }
-
-    public synchronized void run() {
-        long addr = address;
-        address = 0;
-        if (addr != 0) {
-            end.accept(addr);
-        }
-    }
-
-    private ZStreamRef (LongSupplier addr, LongConsumer end) {
-        this.cleanable = null;
-        this.end = end;
-        this.address = addr.getAsLong();
-    }
-
-    /*
-     * If {@code Inflater/Deflater} has been subclassed and the {@code end} method
-     * is overridden, uses {@code finalizer} mechanism for resource cleanup. So
-     * {@code end} method can be called when the {@code Inflater/Deflater} is
-     * unreachable. This mechanism will be removed when the {@code finalize} method
-     * is removed from {@code Inflater/Deflater}.
-     */
-    static ZStreamRef get(Object owner, LongSupplier addr, LongConsumer end) {
-        Class<?> clz = owner.getClass();
-        while (clz != Deflater.class && clz != Inflater.class) {
-            try {
-                clz.getDeclaredMethod("end");
-                return new FinalizableZStreamRef(owner, addr, end);
-            } catch (NoSuchMethodException nsme) {}
-            clz = clz.getSuperclass();
-        }
-        return new ZStreamRef(owner, addr, end);
-    }
-
-    private static class FinalizableZStreamRef extends ZStreamRef {
-        final Object owner;
-
-        FinalizableZStreamRef (Object owner, LongSupplier addr, LongConsumer end) {
-            super(addr, end);
-            this.owner = owner;
-        }
-
-        @Override
-        void clean() {
-            run();
-        }
-
-        @Override
-        @SuppressWarnings("deprecation")
-        protected void finalize() {
-            if (owner instanceof Inflater)
-                ((Inflater)owner).end();
-            else
-                ((Deflater)owner).end();
-        }
-    }
-}