diff -r 692de65ab293 -r c3df0f8b6d93 src/java.base/share/classes/sun/nio/ch/Util.java
--- a/src/java.base/share/classes/sun/nio/ch/Util.java	Tue Oct 29 19:23:09 2019 +0000
+++ b/src/java.base/share/classes/sun/nio/ch/Util.java	Tue Oct 29 19:55:34 2019 +0000
@@ -282,7 +282,7 @@
      * returning to the cache then insert it at the start so that it is
      * likely to be returned by a subsequent call to getTemporaryDirectBuffer.
      */
-    public static void offerFirstTemporaryDirectBuffer(ByteBuffer buf) {
+    static void offerFirstTemporaryDirectBuffer(ByteBuffer buf) {
         // If the buffer is too large for the cache we don't have to
         // check the cache. We'll just free it.
         if (isBufferTooLarge(buf)) {