src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGMetadata.java

*** 1,7 ****
  /*
!  * Copyright (c) 2000, 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) 2000, 2018, 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
*** 266,276 ****
  
      // tRNS chunk
      // If external (non-PNG sourced) data has red = green = blue,
      // always store it as gray and promote when writing
      public boolean tRNS_present;
!     public int tRNS_colorType; // PNG_COLOR_GRAY, _RGB, or _PALETTE
      public byte[] tRNS_alpha; // May have fewer entries than PLTE_red, etc.
      public int tRNS_gray;
      public int tRNS_red;
      public int tRNS_green;
      public int tRNS_blue;
--- 266,276 ----
  
      // tRNS chunk
      // If external (non-PNG sourced) data has red = green = blue,
      // always store it as gray and promote when writing
      public boolean tRNS_present;
!     public int tRNS_colorType = -1; // PNG_COLOR_GRAY, _RGB, or _PALETTE
      public byte[] tRNS_alpha; // May have fewer entries than PLTE_red, etc.
      public int tRNS_gray;
      public int tRNS_red;
      public int tRNS_green;
      public int tRNS_blue;