https://xerces.apache.org/xerces2-j/: Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use. 
class org.apache.xerces.impl.Constants$ArrayEnumeration implements java.util.Enumeration
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.xerces.impl.Constants$ArrayEnumeration
  super_class: java.lang.Object
{
  private java.lang.Object[] array;
    descriptor: [Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE

  private int index;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.lang.Object[]);
    descriptor: ([Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
        start local 1 // java.lang.Object[] array
         0: .line 631
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 632
            aload 0 /* this */
            aload 1 /* array */
            putfield org.apache.xerces.impl.Constants$ArrayEnumeration.array:[Ljava/lang/Object;
         2: .line 633
            return
        end local 1 // java.lang.Object[] array
        end local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lorg/apache/xerces/impl/Constants$ArrayEnumeration;
            0    3     1  array  [Ljava/lang/Object;
    MethodParameters:
       Name  Flags
      array  

  public boolean hasMoreElements();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
         0: .line 647
            aload 0 /* this */
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.index:I
            aload 0 /* this */
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.array:[Ljava/lang/Object;
            arraylength
            if_icmpge 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xerces/impl/Constants$ArrayEnumeration;

  public java.lang.Object nextElement();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
         0: .line 658
            aload 0 /* this */
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.index:I
            aload 0 /* this */
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.array:[Ljava/lang/Object;
            arraylength
            if_icmpge 2
         1: .line 659
            aload 0 /* this */
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.array:[Ljava/lang/Object;
            aload 0 /* this */
            dup
            getfield org.apache.xerces.impl.Constants$ArrayEnumeration.index:I
            dup_x1
            iconst_1
            iadd
            putfield org.apache.xerces.impl.Constants$ArrayEnumeration.index:I
            aaload
            areturn
         2: .line 661
      StackMap locals:
      StackMap stack:
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
        end local 0 // org.apache.xerces.impl.Constants$ArrayEnumeration this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/xerces/impl/Constants$ArrayEnumeration;
}
SourceFile: "Constants.java"
NestHost: org.apache.xerces.impl.Constants
InnerClasses:
  ArrayEnumeration = org.apache.xerces.impl.Constants$ArrayEnumeration of org.apache.xerces.impl.Constants