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

rev 15357 : imported patch 8163517-Various-cleanup-in-java-io-code

*** 219,243 ****
       * character buffer will return a subsequence whose content depends upon
       * the buffer's position and limit.
       *
       * @param  csq
       *         The character sequence to append.  If {@code csq} is
!      *         {@code null}, then the four characters "{@code null}" are
       *         appended to this writer.
       *
       * @return  This writer
       *
       * @throws  IOException
       *          If an I/O error occurs
       *
       * @since  1.5
       */
      public Writer append(CharSequence csq) throws IOException {
!         if (csq == null)
!             write("null");
!         else
!             write(csq.toString());
          return this;
      }
  
      /**
       * Appends a subsequence of the specified character sequence to this writer.
--- 219,240 ----
       * character buffer will return a subsequence whose content depends upon
       * the buffer's position and limit.
       *
       * @param  csq
       *         The character sequence to append.  If {@code csq} is
!      *         {@code null}, then the four characters {@code "null"} are
       *         appended to this writer.
       *
       * @return  This writer
       *
       * @throws  IOException
       *          If an I/O error occurs
       *
       * @since  1.5
       */
      public Writer append(CharSequence csq) throws IOException {
!         write(String.valueOf(csq));
          return this;
      }
  
      /**
       * Appends a subsequence of the specified character sequence to this writer.
*** 254,264 ****
       *
       * @param  csq
       *         The character sequence from which a subsequence will be
       *         appended.  If {@code csq} is {@code null}, then characters
       *         will be appended as if {@code csq} contained the four
!      *         characters "{@code null}".
       *
       * @param  start
       *         The index of the first character in the subsequence
       *
       * @param  end
--- 251,261 ----
       *
       * @param  csq
       *         The character sequence from which a subsequence will be
       *         appended.  If {@code csq} is {@code null}, then characters
       *         will be appended as if {@code csq} contained the four
!      *         characters {@code "null"}.
       *
       * @param  start
       *         The index of the first character in the subsequence
       *
       * @param  end
*** 276,287 ****
       *          If an I/O error occurs
       *
       * @since  1.5
       */
      public Writer append(CharSequence csq, int start, int end) throws IOException {
!         CharSequence cs = (csq == null ? "null" : csq);
!         write(cs.subSequence(start, end).toString());
          return this;
      }
  
      /**
       * Appends the specified character to this writer.
--- 273,284 ----
       *          If an I/O error occurs
       *
       * @since  1.5
       */
      public Writer append(CharSequence csq, int start, int end) throws IOException {
!         if (csq == null) csq = "null";
!         write(csq.subSequence(start, end).toString());
          return this;
      }
  
      /**
       * Appends the specified character to this writer.