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  1. JDK
  2. JDK-4912448

Some XMLReader.setXXX() methods incorrectly throw NullPointerException

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    • Subcomponent:
    • Resolved In Build:
      tiger
    • CPU:
      generic
    • OS:
      generic
    • Verification:
      Verified

      Description

      Name: eaR10174 Date: 08/26/2003


        The following methods of XMLReader implementation incorrectly throw NullPointerException
      (see test.java below) in case when a parameter is null
        
           public void setContentHandler(ContentHandler handler)
           public void setDTDHandler(DTDHandler handler)
           public void setEntityResolver(EntityResolver resolver)
           public void setErrorHandler(ErrorHandler handler)
           
      In jdk1.5.0-beta-b16 the version of javadoc of the methods has been changed from SAX 2.0
      to SAX 2.0.1 . The javadoc reads that the methods do not throw NullPointerException. So
      according to the document "Requirements for Writing Java API Specifications"
      (http://java.sun.com/j2se/javadoc/writingapispecs/index.html) in such a case the parameter
      null is valid value.

        The bug appears in jdk1.5.0beta-b16 and affects JCK1.5 tests that have been adapted for
      the new javadoc:
        
         api/org_xml/sax/XMLReader/index.html#Handler[Handler103]
         api/org_xml/sax/XMLReader/index.html#Handler[Handler305]
         api/org_xml/sax/XMLReader/index.html#Handler[Handler507]
         api/org_xml/sax/XMLReader/index.html#Handler[Handler709]
         
      ------------------------------------test.java-----------------------------
      import javax.xml.parsers.SAXParserFactory;
      import org.xml.sax.XMLReader;
      import org.xml.sax.helpers.DefaultHandler;

      public class test {

          public static void main(String argv[]) {
              new test().run();
          }
          
          public void run() {
              XMLReader parser = null;
              try {
                  parser = SAXParserFactory.newInstance().newSAXParser().getXMLReader();
              } catch (Exception e) {
                  e.printStackTrace();
                  System.exit(1);
              }
              
              DefaultHandler handler = null;
              
              try {
                  parser.setContentHandler(handler);
              } catch (NullPointerException e) {
                  System.out.println("");
                  e.printStackTrace();
              }

              try {
                  parser.setDTDHandler(handler);
              } catch (NullPointerException e) {
                  System.out.println("");
                  e.printStackTrace();
              }

              try {
                  parser.setEntityResolver(handler);
              } catch (NullPointerException e) {
                  System.out.println("");
                  e.printStackTrace();
              }

              try {
                  parser.setErrorHandler(handler);
              } catch (NullPointerException e) {
                  System.out.println("");
                  e.printStackTrace();
              }
          }
      }
      --------------------------------------------------------------------------
      % java -showversion test
      java version "1.5.0-beta"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b16)
      Java HotSpot(TM) Client VM (build 1.5.0-beta-b16, mixed mode)


      java.lang.NullPointerException
              at
      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.setContentHandler(AbstractSAX
      Parser.java:1422)
              at test.run(test.java:23)
              at test.main(test.java:8)

      java.lang.NullPointerException
              at
      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.setDTDHandler(AbstractSAXPars
      er.java:1370)
              at test.run(test.java:30)
              at test.main(test.java:8)

      java.lang.NullPointerException
              at
      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.setEntityResolver(AbstractSAX
      Parser.java:1232)
              at test.run(test.java:37)
              at test.main(test.java:8)

      java.lang.NullPointerException
              at
      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.setErrorHandler(AbstractSAXPa
      rser.java:1291)
              at test.run(test.java:44)
              at test.main(test.java:8)
      --------------------------------------------------------------------------


      ======================================================================

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              Assignee:
              nbajajsunw Neeraj Bajaj (Inactive)
              Reporter:
              evgsunw Evg Evg (Inactive)
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