jaxp-api-1.3/src/main/java/javax/xml/xpath/XPathFactoryFinder.java [261:434]:
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        try {
            if (debug) debugPrintln("instanciating "+className);
            Class clazz;
            if( classLoader!=null )
                clazz = classLoader.loadClass(className);
            else
                clazz = Class.forName(className);
            if(debug)       debugPrintln("loaded it from "+which(clazz));
            Object o = clazz.newInstance();
            
            if( o instanceof XPathFactory )
                return (XPathFactory)o;
            
            if (debug) debugPrintln(className+" is not assignable to "+SERVICE_CLASS.getName());
        } catch( Throwable t ) {
            if (debug) {
                debugPrintln("failed to instanciate "+className);
                t.printStackTrace();
            }
        }
        return null;
    }
    
    /** Iterator that lazily computes one value and returns it. */
    private static abstract class SingleIterator implements Iterator {
        private boolean seen = false;
        
        public final void remove() { throw new UnsupportedOperationException(); }
        public final boolean hasNext() { return !seen; }
        public final Object next() {
            if(seen)    throw new NoSuchElementException();
            seen = true;
            return value();
        }
        
        protected abstract Object value();
    }
    
    /** Searches for a XPathFactory for a given uri in a META-INF/services file. */
    private XPathFactory loadFromServicesFile(String uri, String resourceName, InputStream in) {

        if (debug) debugPrintln("Reading " + resourceName );
        
        BufferedReader rd;
        try {
            rd = new BufferedReader(new InputStreamReader(in, "UTF-8"), DEFAULT_LINE_LENGTH);
        } catch (java.io.UnsupportedEncodingException e) {
            rd = new BufferedReader(new InputStreamReader(in), DEFAULT_LINE_LENGTH);
        }
        
        String factoryClassName = null;
        XPathFactory resultFactory = null;
        // See spec for provider-configuration files: http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html#Provider%20Configuration%20File
        while (true) {
            try {
                factoryClassName = rd.readLine();   
            } catch (IOException x) {
                // No provider found
                break;
            }
            if (factoryClassName != null) {
                // Ignore comments in the provider-configuration file
                int hashIndex = factoryClassName.indexOf('#');
                if (hashIndex != -1) {
                    factoryClassName = factoryClassName.substring(0, hashIndex);
                }
                
                // Ignore leading and trailing whitespace
                factoryClassName = factoryClassName.trim();
                
                // If there's no text left or if this was a blank line, go to the next one.
                if (factoryClassName.length() == 0) {
                    continue;
                }
                
                try {
                    // Found the right XPathFactory if its isObjectModelSupported(String uri) method returns true.
                    XPathFactory foundFactory = (XPathFactory) createInstance(factoryClassName);
                    if (foundFactory.isObjectModelSupported(uri)) {
                        resultFactory = foundFactory;
                        break;
                    }
                }
                catch (Exception e) {}
            }
            else {
                break;
            }
        }
        
        try {
            // try to close the reader.
            rd.close();
        }
        // Ignore the exception.
        catch (IOException exc) {}
        
        return resultFactory;
    }
        
    /**
     * Returns an {@link Iterator} that enumerates all 
     * the META-INF/services files that we care.
     */
    private Iterator createServiceFileIterator() {
        if (classLoader == null) {
            return new SingleIterator() {
                protected Object value() {
                    ClassLoader classLoader = XPathFactoryFinder.class.getClassLoader();
                    return SecuritySupport.getResourceAsURL(classLoader, SERVICE_ID);
                    //return (ClassLoader.getSystemResource( SERVICE_ID ));
                }
            };
        } else {
            try {
                //final Enumeration e = classLoader.getResources(SERVICE_ID);
                final Enumeration e = SecuritySupport.getResources(classLoader, SERVICE_ID);
                if (debug && !e.hasMoreElements()) {
                    debugPrintln("no "+SERVICE_ID+" file was found");
                }
                
                // wrap it into an Iterator.
                return new Iterator() {
                    public void remove() {
                        throw new UnsupportedOperationException();
                    }

                    public boolean hasNext() {
                        return e.hasMoreElements();
                    }

                    public Object next() {
                        return e.nextElement();
                    }
                };
            } catch (IOException e) {
                if (debug) {
                    debugPrintln("failed to enumerate resources "+SERVICE_ID);
                    e.printStackTrace();
                }
                return new ArrayList().iterator();  // empty iterator
            }
        }
    }
    
    private static final Class SERVICE_CLASS = XPathFactory.class;
    private static final String SERVICE_ID = "META-INF/services/" + SERVICE_CLASS.getName();
    
    
    
    private static String which( Class clazz ) {
        return which( clazz.getName(), clazz.getClassLoader() );
    }

    /**
     * <p>Search the specified classloader for the given classname.</p>
     *
     * @param classname the fully qualified name of the class to search for
     * @param loader the classloader to search
     * 
     * @return the source location of the resource, or null if it wasn't found
     */
    private static String which(String classname, ClassLoader loader) {

        String classnameAsResource = classname.replace('.', '/') + ".class";
        
        if( loader==null )  loader = ClassLoader.getSystemClassLoader();
        
        //URL it = loader.getResource(classnameAsResource);
        URL it = SecuritySupport.getResourceAsURL(loader, classnameAsResource);
        if (it != null) {
            return it.toString();
        } else {
            return null;
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jaxp-api-1.4/src/main/java/javax/xml/xpath/XPathFactoryFinder.java [266:439]:
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        try {
            if (debug) debugPrintln("instanciating "+className);
            Class clazz;
            if( classLoader!=null )
                clazz = classLoader.loadClass(className);
            else
                clazz = Class.forName(className);
            if(debug)       debugPrintln("loaded it from "+which(clazz));
            Object o = clazz.newInstance();
            
            if( o instanceof XPathFactory )
                return (XPathFactory)o;
            
            if (debug) debugPrintln(className+" is not assignable to "+SERVICE_CLASS.getName());
        } catch( Throwable t ) {
            if (debug) {
                debugPrintln("failed to instanciate "+className);
                t.printStackTrace();
            }
        }
        return null;
    }
    
    /** Iterator that lazily computes one value and returns it. */
    private static abstract class SingleIterator implements Iterator {
        private boolean seen = false;
        
        public final void remove() { throw new UnsupportedOperationException(); }
        public final boolean hasNext() { return !seen; }
        public final Object next() {
            if(seen)    throw new NoSuchElementException();
            seen = true;
            return value();
        }
        
        protected abstract Object value();
    }
    
    /** Searches for a XPathFactory for a given uri in a META-INF/services file. */
    private XPathFactory loadFromServicesFile(String uri, String resourceName, InputStream in) {

        if (debug) debugPrintln("Reading " + resourceName );
        
        BufferedReader rd;
        try {
            rd = new BufferedReader(new InputStreamReader(in, "UTF-8"), DEFAULT_LINE_LENGTH);
        } catch (java.io.UnsupportedEncodingException e) {
            rd = new BufferedReader(new InputStreamReader(in), DEFAULT_LINE_LENGTH);
        }
        
        String factoryClassName = null;
        XPathFactory resultFactory = null;
        // See spec for provider-configuration files: http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html#Provider%20Configuration%20File
        while (true) {
            try {
                factoryClassName = rd.readLine();   
            } catch (IOException x) {
                // No provider found
                break;
            }
            if (factoryClassName != null) {
                // Ignore comments in the provider-configuration file
                int hashIndex = factoryClassName.indexOf('#');
                if (hashIndex != -1) {
                    factoryClassName = factoryClassName.substring(0, hashIndex);
                }
                
                // Ignore leading and trailing whitespace
                factoryClassName = factoryClassName.trim();
                
                // If there's no text left or if this was a blank line, go to the next one.
                if (factoryClassName.length() == 0) {
                    continue;
                }
                
                try {
                    // Found the right XPathFactory if its isObjectModelSupported(String uri) method returns true.
                    XPathFactory foundFactory = (XPathFactory) createInstance(factoryClassName);
                    if (foundFactory.isObjectModelSupported(uri)) {
                        resultFactory = foundFactory;
                        break;
                    }
                }
                catch (Exception e) {}
            }
            else {
                break;
            }
        }
        
        try {
            // try to close the reader.
            rd.close();
        }
        // Ignore the exception.
        catch (IOException exc) {}
        
        return resultFactory;
    }
        
    /**
     * Returns an {@link Iterator} that enumerates all 
     * the META-INF/services files that we care.
     */
    private Iterator createServiceFileIterator() {
        if (classLoader == null) {
            return new SingleIterator() {
                protected Object value() {
                    ClassLoader classLoader = XPathFactoryFinder.class.getClassLoader();
                    return SecuritySupport.getResourceAsURL(classLoader, SERVICE_ID);
                    //return (ClassLoader.getSystemResource( SERVICE_ID ));
                }
            };
        } else {
            try {
                //final Enumeration e = classLoader.getResources(SERVICE_ID);
                final Enumeration e = SecuritySupport.getResources(classLoader, SERVICE_ID);
                if (debug && !e.hasMoreElements()) {
                    debugPrintln("no "+SERVICE_ID+" file was found");
                }
                
                // wrap it into an Iterator.
                return new Iterator() {
                    public void remove() {
                        throw new UnsupportedOperationException();
                    }

                    public boolean hasNext() {
                        return e.hasMoreElements();
                    }

                    public Object next() {
                        return e.nextElement();
                    }
                };
            } catch (IOException e) {
                if (debug) {
                    debugPrintln("failed to enumerate resources "+SERVICE_ID);
                    e.printStackTrace();
                }
                return new ArrayList().iterator();  // empty iterator
            }
        }
    }
    
    private static final Class SERVICE_CLASS = XPathFactory.class;
    private static final String SERVICE_ID = "META-INF/services/" + SERVICE_CLASS.getName();
    
    
    
    private static String which( Class clazz ) {
        return which( clazz.getName(), clazz.getClassLoader() );
    }

    /**
     * <p>Search the specified classloader for the given classname.</p>
     *
     * @param classname the fully qualified name of the class to search for
     * @param loader the classloader to search
     * 
     * @return the source location of the resource, or null if it wasn't found
     */
    private static String which(String classname, ClassLoader loader) {

        String classnameAsResource = classname.replace('.', '/') + ".class";
        
        if( loader==null )  loader = ClassLoader.getSystemClassLoader();
        
        //URL it = loader.getResource(classnameAsResource);
        URL it = SecuritySupport.getResourceAsURL(loader, classnameAsResource);
        if (it != null) {
            return it.toString();
        } else {
            return null;
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