src/java.xml/share/classes/com/sun/xml/internal/stream/writers/XMLStreamWriterImpl.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, 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
*** 1728,1742 ****
       * @return
       */
      private boolean isDefaultNamespace(String uri) {
          String defaultNamespace = fInternalNamespaceContext.getURI(DEFAULT_PREFIX);
  
!         if (uri.equals(defaultNamespace)) {
!             return true;
!         }
! 
!         return false;
      }
  
      /**
       * @param prefix
       * @param uri
--- 1728,1738 ----
       * @return
       */
      private boolean isDefaultNamespace(String uri) {
          String defaultNamespace = fInternalNamespaceContext.getURI(DEFAULT_PREFIX);
  
!         return uri != null && uri.equals(defaultNamespace);
      }
  
      /**
       * @param prefix
       * @param uri