src/java.base/share/classes/java/io/PushbackInputStream.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1994, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -215,10 +215,11 @@
      * have the value <code>b[off+1]</code>, and so forth.
      *
      * @param b the byte array to push back.
      * @param off the start offset of the data.
      * @param len the number of bytes to push back.
+     * @exception NullPointerException If <code>b</code> is <code>null</code>.
      * @exception IOException If there is not enough room in the pushback
      *            buffer for the specified number of bytes,
      *            or this input stream has been closed by
      *            invoking its {@link #close()} method.
      * @since     1.1

@@ -237,10 +238,11 @@
      * pushback buffer.  After this method returns, the next byte to be read
      * will have the value <code>b[0]</code>, the byte after that will have the
      * value <code>b[1]</code>, and so forth.
      *
      * @param b the byte array to push back
+     * @exception NullPointerException If <code>b</code> is <code>null</code>.
      * @exception IOException If there is not enough room in the pushback
      *            buffer for the specified number of bytes,
      *            or this input stream has been closed by
      *            invoking its {@link #close()} method.
      * @since     1.1