--- a/src/java.base/share/classes/java/nio/Heap-X-Buffer.java.template	Wed Feb 20 13:24:57 2019 -0500
+++ b/src/java.base/share/classes/java/nio/Heap-X-Buffer.java.template	Wed Feb 20 10:57:22 2019 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -38,6 +38,8 @@
 #end[rw]
  */
 
+import java.util.Objects;
+
 class Heap$Type$Buffer$RW$
     extends {#if[ro]?Heap}$Type$Buffer
 {
@@ -181,6 +183,13 @@
         return this;
     }
 
+    public $Type$Buffer get(int index, $type$[] dst, int offset, int length) {
+        Objects.checkFromIndexSize(index, length, limit());
+        Objects.checkFromIndexSize(offset, length, dst.length);
+        System.arraycopy(hb, ix(index), dst, offset, length);
+        return this;
+    }
+
     public boolean isDirect() {
         return false;
     }
@@ -250,6 +259,17 @@
 #end[rw]
     }
 
+    public $Type$Buffer put(int index, $type$[] src, int offset, int length) {
+#if[rw]
+        Objects.checkFromIndexSize(index, length, limit());
+        Objects.checkFromIndexSize(offset, length, src.length);
+        System.arraycopy(src, offset, hb, ix(index), length);
+        return this;
+#else[rw]
+        throw new ReadOnlyBufferException();
+#end[rw]
+    }
+
     public $Type$Buffer compact() {
 #if[rw]
         System.arraycopy(hb, ix(position()), hb, ix(0), remaining());