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 final class javax.xml.datatype.DatatypeConstants
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: javax.xml.datatype.DatatypeConstants
  super_class: java.lang.Object
{
  public static final int JANUARY;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int FEBRUARY;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final int MARCH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 3

  public static final int APRIL;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  public static final int MAY;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 5

  public static final int JUNE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 6

  public static final int JULY;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 7

  public static final int AUGUST;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 8

  public static final int SEPTEMBER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 9

  public static final int OCTOBER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 10

  public static final int NOVEMBER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 11

  public static final int DECEMBER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 12

  public static final int LESSER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: -1

  public static final int EQUAL;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int GREATER;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int INDETERMINATE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final int FIELD_UNDEFINED;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: -2147483648

  public static final javax.xml.datatype.DatatypeConstants$Field YEARS;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.datatype.DatatypeConstants$Field MONTHS;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.datatype.DatatypeConstants$Field DAYS;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.datatype.DatatypeConstants$Field HOURS;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.datatype.DatatypeConstants$Field MINUTES;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.datatype.DatatypeConstants$Field SECONDS;
    descriptor: Ljavax/xml/datatype/DatatypeConstants$Field;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName DATETIME;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName TIME;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName DATE;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName GYEARMONTH;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName GMONTHDAY;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName GYEAR;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName GMONTH;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName GDAY;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName DURATION;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName DURATION_DAYTIME;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final javax.xml.namespace.QName DURATION_YEARMONTH;
    descriptor: Ljavax/xml/namespace/QName;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final int MAX_TIMEZONE_OFFSET;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: -840

  public static final int MIN_TIMEZONE_OFFSET;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 840

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 129
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "YEARS"
            iconst_0
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.YEARS:Ljavax/xml/datatype/DatatypeConstants$Field;
         1: .line 134
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "MONTHS"
            iconst_1
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.MONTHS:Ljavax/xml/datatype/DatatypeConstants$Field;
         2: .line 139
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "DAYS"
            iconst_2
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.DAYS:Ljavax/xml/datatype/DatatypeConstants$Field;
         3: .line 144
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "HOURS"
            iconst_3
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.HOURS:Ljavax/xml/datatype/DatatypeConstants$Field;
         4: .line 149
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "MINUTES"
            iconst_4
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.MINUTES:Ljavax/xml/datatype/DatatypeConstants$Field;
         5: .line 154
            new javax.xml.datatype.DatatypeConstants$Field
            dup
            ldc "SECONDS"
            iconst_5
            invokespecial javax.xml.datatype.DatatypeConstants$Field.<init>:(Ljava/lang/String;I)V
            putstatic javax.xml.datatype.DatatypeConstants.SECONDS:Ljavax/xml/datatype/DatatypeConstants$Field;
         6: .line 206
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "dateTime"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.DATETIME:Ljavax/xml/namespace/QName;
         7: .line 211
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "time"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.TIME:Ljavax/xml/namespace/QName;
         8: .line 216
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "date"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.DATE:Ljavax/xml/namespace/QName;
         9: .line 221
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "gYearMonth"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.GYEARMONTH:Ljavax/xml/namespace/QName;
        10: .line 226
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "gMonthDay"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.GMONTHDAY:Ljavax/xml/namespace/QName;
        11: .line 231
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "gYear"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.GYEAR:Ljavax/xml/namespace/QName;
        12: .line 236
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "gMonth"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.GMONTH:Ljavax/xml/namespace/QName;
        13: .line 241
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "gDay"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.GDAY:Ljavax/xml/namespace/QName;
        14: .line 246
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2001/XMLSchema"
            ldc "duration"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.DURATION:Ljavax/xml/namespace/QName;
        15: .line 251
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2003/11/xpath-datatypes"
            ldc "dayTimeDuration"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.DURATION_DAYTIME:Ljavax/xml/namespace/QName;
        16: .line 256
            new javax.xml.namespace.QName
            dup
            ldc "http://www.w3.org/2003/11/xpath-datatypes"
            ldc "yearMonthDuration"
            invokespecial javax.xml.namespace.QName.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            putstatic javax.xml.datatype.DatatypeConstants.DURATION_YEARMONTH:Ljavax/xml/namespace/QName;
        17: .line 266
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // javax.xml.datatype.DatatypeConstants this
         0: .line 38
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 39
            return
        end local 0 // javax.xml.datatype.DatatypeConstants this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljavax/xml/datatype/DatatypeConstants;
}
SourceFile: "DatatypeConstants.java"
NestMembers:
  javax.xml.datatype.DatatypeConstants$Field
InnerClasses:
  public final Field = javax.xml.datatype.DatatypeConstants$Field of javax.xml.datatype.DatatypeConstants