http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
public abstract class javax.xml.stream.XMLOutputFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: javax.xml.stream.XMLOutputFactory
  super_class: java.lang.Object
{
  public static final java.lang.String IS_REPAIRING_NAMESPACES;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "javax.xml.stream.isRepairingNamespaces"

  private static final java.lang.String PROPERTY_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "javax.xml.stream.XMLOutputFactory"

  private static final java.lang.String DEFAULT_FACTORY;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "com.ctc.wstx.stax.WstxOutputFactory"

  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // javax.xml.stream.XMLOutputFactory this
         0: .line 32
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // javax.xml.stream.XMLOutputFactory this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljavax/xml/stream/XMLOutputFactory;

  public static javax.xml.stream.XMLOutputFactory newInstance();
    descriptor: ()Ljavax/xml/stream/XMLOutputFactory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=1, args_size=0
         0: .line 37
            ldc "javax.xml.stream.XMLOutputFactory"
            ldc "com.ctc.wstx.stax.WstxOutputFactory"
            invokestatic javax.xml.stream.FactoryFinder.find:(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;
            checkcast javax.xml.stream.XMLOutputFactory
         1: areturn
         2: .line 39
      StackMap locals:
      StackMap stack: javax.xml.stream.FactoryFinder$ConfigurationError
            astore 0 /* e */
        start local 0 // javax.xml.stream.FactoryFinder$ConfigurationError e
         3: .line 40
            new javax.xml.stream.FactoryConfigurationError
            dup
            aload 0 /* e */
            invokevirtual javax.xml.stream.FactoryFinder$ConfigurationError.getException:()Ljava/lang/Exception;
            aload 0 /* e */
            invokevirtual javax.xml.stream.FactoryFinder$ConfigurationError.getMessage:()Ljava/lang/String;
            invokespecial javax.xml.stream.FactoryConfigurationError.<init>:(Ljava/lang/Exception;Ljava/lang/String;)V
            athrow
        end local 0 // javax.xml.stream.FactoryFinder$ConfigurationError e
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            3    4     0     e  Ljavax/xml/stream/FactoryFinder$ConfigurationError;
      Exception table:
        from    to  target  type
           0     1       2  Class javax.xml.stream.FactoryFinder$ConfigurationError
    Exceptions:
      throws javax.xml.stream.FactoryConfigurationError

  public static javax.xml.stream.XMLInputFactory newInstance(java.lang.String, java.lang.ClassLoader);
    descriptor: (Ljava/lang/String;Ljava/lang/ClassLoader;)Ljavax/xml/stream/XMLInputFactory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // java.lang.String factoryId
        start local 1 // java.lang.ClassLoader classLoader
         0: .line 46
            aload 1 /* classLoader */
            ifnonnull 2
         1: .line 47
            invokestatic javax.xml.stream.SecuritySupport.getContextClassLoader:()Ljava/lang/ClassLoader;
            astore 1 /* classLoader */
         2: .line 50
      StackMap locals:
      StackMap stack:
            aload 0 /* factoryId */
         3: .line 51
            aload 1 /* classLoader */
            ldc "com.ctc.wstx.stax.WstxInputFactory"
         4: .line 50
            invokestatic javax.xml.stream.FactoryFinder.find:(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Object;
            checkcast javax.xml.stream.XMLInputFactory
         5: areturn
         6: .line 53
      StackMap locals:
      StackMap stack: javax.xml.stream.FactoryFinder$ConfigurationError
            astore 2 /* e */
        start local 2 // javax.xml.stream.FactoryFinder$ConfigurationError e
         7: .line 54
            new javax.xml.stream.FactoryConfigurationError
            dup
            aload 2 /* e */
            invokevirtual javax.xml.stream.FactoryFinder$ConfigurationError.getException:()Ljava/lang/Exception;
            aload 2 /* e */
            invokevirtual javax.xml.stream.FactoryFinder$ConfigurationError.getMessage:()Ljava/lang/String;
            invokespecial javax.xml.stream.FactoryConfigurationError.<init>:(Ljava/lang/Exception;Ljava/lang/String;)V
            athrow
        end local 2 // javax.xml.stream.FactoryFinder$ConfigurationError e
        end local 1 // java.lang.ClassLoader classLoader
        end local 0 // java.lang.String factoryId
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    8     0    factoryId  Ljava/lang/String;
            0    8     1  classLoader  Ljava/lang/ClassLoader;
            7    8     2            e  Ljavax/xml/stream/FactoryFinder$ConfigurationError;
      Exception table:
        from    to  target  type
           2     5       6  Class javax.xml.stream.FactoryFinder$ConfigurationError
    Exceptions:
      throws javax.xml.stream.FactoryConfigurationError
    MethodParameters:
             Name  Flags
      factoryId    
      classLoader  

  public abstract javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.Writer);
    descriptor: (Ljava/io/Writer;)Ljavax/xml/stream/XMLStreamWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      stream  

  public abstract javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.OutputStream);
    descriptor: (Ljava/io/OutputStream;)Ljavax/xml/stream/XMLStreamWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      stream  

  public abstract javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.OutputStream, java.lang.String);
    descriptor: (Ljava/io/OutputStream;Ljava/lang/String;)Ljavax/xml/stream/XMLStreamWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
          Name  Flags
      stream    
      encoding  

  public abstract javax.xml.stream.XMLStreamWriter createXMLStreamWriter(javax.xml.transform.Result);
    descriptor: (Ljavax/xml/transform/Result;)Ljavax/xml/stream/XMLStreamWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      result  

  public abstract javax.xml.stream.XMLEventWriter createXMLEventWriter(javax.xml.transform.Result);
    descriptor: (Ljavax/xml/transform/Result;)Ljavax/xml/stream/XMLEventWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      result  

  public abstract javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.OutputStream);
    descriptor: (Ljava/io/OutputStream;)Ljavax/xml/stream/XMLEventWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      stream  

  public abstract javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.OutputStream, java.lang.String);
    descriptor: (Ljava/io/OutputStream;Ljava/lang/String;)Ljavax/xml/stream/XMLEventWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
          Name  Flags
      stream    
      encoding  

  public abstract javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.Writer);
    descriptor: (Ljava/io/Writer;)Ljavax/xml/stream/XMLEventWriter;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
        Name  Flags
      stream  

  public abstract void setProperty(java.lang.String, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.lang.IllegalArgumentException
    MethodParameters:
       Name  Flags
      name   
      value  

  public abstract java.lang.Object getProperty(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.lang.IllegalArgumentException
    MethodParameters:
      Name  Flags
      name  

  public abstract boolean isPropertySupported(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      name  
}
SourceFile: "XMLOutputFactory.java"
InnerClasses:
  ConfigurationError = javax.xml.stream.FactoryFinder$ConfigurationError of javax.xml.stream.FactoryFinder