diff -r 692de65ab293 -r c3df0f8b6d93 src/java.base/share/classes/sun/nio/ch/NativeDispatcher.java
--- a/src/java.base/share/classes/sun/nio/ch/NativeDispatcher.java	Tue Oct 29 19:23:09 2019 +0000
+++ b/src/java.base/share/classes/sun/nio/ch/NativeDispatcher.java	Tue Oct 29 19:55:34 2019 +0000
@@ -32,10 +32,10 @@
  * for read and write operations.
  */
 
-public abstract class NativeDispatcher
+abstract class NativeDispatcher
 {
 
-    public abstract int read(FileDescriptor fd, long address, int len)
+    abstract int read(FileDescriptor fd, long address, int len)
         throws IOException;
 
     /**
@@ -55,7 +55,7 @@
     abstract long readv(FileDescriptor fd, long address, int len)
         throws IOException;
 
-    public abstract int write(FileDescriptor fd, long address, int len)
+    abstract int write(FileDescriptor fd, long address, int len)
         throws IOException;
 
     int pwrite(FileDescriptor fd, long address, int len, long position)
@@ -67,13 +67,13 @@
     abstract long writev(FileDescriptor fd, long address, int len)
         throws IOException;
 
-    public abstract void close(FileDescriptor fd) throws IOException;
+    abstract void close(FileDescriptor fd) throws IOException;
 
     // Prepare the given fd for closing by duping it to a known internal fd
     // that's already closed.  This is necessary on some operating systems
     // (Solaris and Linux) to prevent fd recycling.
     //
-    public void preClose(FileDescriptor fd) throws IOException {
+    void preClose(FileDescriptor fd) throws IOException {
         // Do nothing by default; this is only needed on Unix
     }