src/java.desktop/share/classes/com/sun/imageio/plugins/gif/GIFImageWriter.java

*** 1,7 ****
  /*
!  * Copyright (c) 2005, 2017, 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
--- 1,7 ----
  /*
!  * Copyright (c) 2005, 2020, 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
*** 265,274 ****
--- 265,275 ----
          if (DEBUG) {
              System.err.println("GIF Writer is created");
          }
      }
  
+     @Override
      public boolean canWriteSequence() {
          return true;
      }
  
      /**
*** 315,324 ****
--- 316,326 ----
  
      /**
       * Creates a default stream metadata object and merges in the
       * supplied metadata.
       */
+     @Override
      public IIOMetadata convertStreamMetadata(IIOMetadata inData,
                                               ImageWriteParam param) {
          if (inData == null) {
              throw new IllegalArgumentException("inData == null!");
          }
*** 332,341 ****
--- 334,344 ----
  
      /**
       * Creates a default image metadata object and merges in the
       * supplied metadata.
       */
+     @Override
      public IIOMetadata convertImageMetadata(IIOMetadata inData,
                                              ImageTypeSpecifier imageType,
                                              ImageWriteParam param) {
          if (inData == null) {
              throw new IllegalArgumentException("inData == null!");
*** 362,371 ****
--- 365,375 ----
          }
  
          return im;
      }
  
+     @Override
      public void endWriteSequence() throws IOException {
          if (stream == null) {
              throw new IllegalStateException("output == null!");
          }
          if (!isWritingSequence) {
*** 373,382 ****
--- 377,387 ----
          }
          writeTrailer();
          resetLocal();
      }
  
+     @Override
      public IIOMetadata getDefaultImageMetadata(ImageTypeSpecifier imageType,
                                                 ImageWriteParam param) {
          GIFWritableImageMetadata imageMetadata =
              new GIFWritableImageMetadata();
  
*** 420,440 ****
--- 425,448 ----
          }
  
          return imageMetadata;
      }
  
+     @Override
      public IIOMetadata getDefaultStreamMetadata(ImageWriteParam param) {
          GIFWritableStreamMetadata streamMetadata =
              new GIFWritableStreamMetadata();
          streamMetadata.version = "89a";
          return streamMetadata;
      }
  
+     @Override
      public ImageWriteParam getDefaultWriteParam() {
          return new GIFImageWriteParam(getLocale());
      }
  
+     @Override
      public void prepareWriteSequence(IIOMetadata streamMetadata)
        throws IOException {
  
          if (stream == null) {
              throw new IllegalStateException("Output is not set.");
*** 453,462 ****
--- 461,471 ----
          }
  
          this.isWritingSequence = true;
      }
  
+     @Override
      public void reset() {
          super.reset();
          resetLocal();
      }
  
*** 468,477 ****
--- 477,487 ----
          this.wroteSequenceHeader = false;
          this.theStreamMetadata = null;
          this.imageIndex = 0;
      }
  
+     @Override
      public void setOutput(Object output) {
          super.setOutput(output);
          if (output != null) {
              if (!(output instanceof ImageOutputStream)) {
                  throw new
*** 482,491 ****
--- 492,502 ----
          } else {
              this.stream = null;
          }
      }
  
+     @Override
      public void write(IIOMetadata sm,
                        IIOImage iioimage,
                        ImageWriteParam p) throws IOException {
          if (stream == null) {
              throw new IllegalStateException("output == null!");
*** 509,518 ****
--- 520,530 ----
          }
  
          write(true, true, streamMetadata, iioimage, p);
      }
  
+     @Override
      public void writeToSequence(IIOImage image, ImageWriteParam param)
        throws IOException {
          if (stream == null) {
              throw new IllegalStateException("output == null!");
          }
*** 1317,1326 ****
--- 1329,1339 ----
          this.canWriteProgressive = true;
          this.compressionTypes = new String[] {"LZW"};
          this.compressionType = compressionTypes[0];
      }
  
+     @Override
      public void setCompressionMode(int mode) {
          if (mode == MODE_DISABLED) {
              throw new UnsupportedOperationException("MODE_DISABLED is not supported.");
          }
          super.setCompressionMode(mode);