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. 
public class org.apache.xerces.dom.DOMMessageFormatter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.xerces.dom.DOMMessageFormatter
  super_class: java.lang.Object
{
  public static final java.lang.String DOM_DOMAIN;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/dom/DOMTR"

  public static final java.lang.String XML_DOMAIN;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/TR/1998/REC-xml-19980210"

  public static final java.lang.String SERIALIZER_DOMAIN;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://apache.org/xml/serializer"

  private static java.util.ResourceBundle domResourceBundle;
    descriptor: Ljava/util/ResourceBundle;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static java.util.ResourceBundle xmlResourceBundle;
    descriptor: Ljava/util/ResourceBundle;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static java.util.ResourceBundle serResourceBundle;
    descriptor: Ljava/util/ResourceBundle;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static java.util.Locale locale;
    descriptor: Ljava/util/Locale;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 38
            aconst_null
            putstatic org.apache.xerces.dom.DOMMessageFormatter.domResourceBundle:Ljava/util/ResourceBundle;
         1: .line 39
            aconst_null
            putstatic org.apache.xerces.dom.DOMMessageFormatter.xmlResourceBundle:Ljava/util/ResourceBundle;
         2: .line 40
            aconst_null
            putstatic org.apache.xerces.dom.DOMMessageFormatter.serResourceBundle:Ljava/util/ResourceBundle;
         3: .line 41
            aconst_null
            putstatic org.apache.xerces.dom.DOMMessageFormatter.locale:Ljava/util/Locale;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.xerces.dom.DOMMessageFormatter this
         0: .line 43
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 44
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            putstatic org.apache.xerces.dom.DOMMessageFormatter.locale:Ljava/util/Locale;
         2: .line 45
            return
        end local 0 // org.apache.xerces.dom.DOMMessageFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/xerces/dom/DOMMessageFormatter;

  public static java.lang.String formatMessage(java.lang.String, java.lang.String, java.lang.Object[]);
    descriptor: (Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=7, args_size=3
        start local 0 // java.lang.String domain
        start local 1 // java.lang.String key
        start local 2 // java.lang.Object[] arguments
         0: .line 65
            aload 0 /* domain */
            invokestatic org.apache.xerces.dom.DOMMessageFormatter.getResourceBundle:(Ljava/lang/String;)Ljava/util/ResourceBundle;
            astore 3 /* resourceBundle */
        start local 3 // java.util.ResourceBundle resourceBundle
         1: .line 66
            aload 3 /* resourceBundle */
            ifnonnull 6
         2: .line 67
            invokestatic org.apache.xerces.dom.DOMMessageFormatter.init:()V
         3: .line 68
            aload 0 /* domain */
            invokestatic org.apache.xerces.dom.DOMMessageFormatter.getResourceBundle:(Ljava/lang/String;)Ljava/util/ResourceBundle;
            astore 3 /* resourceBundle */
         4: .line 69
            aload 3 /* resourceBundle */
            ifnonnull 6
         5: .line 70
            new java.util.MissingResourceException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Unknown domain"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* domain */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aconst_null
            aload 1 /* key */
            invokespecial java.util.MissingResourceException.<init>:(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
            athrow
         6: .line 75
      StackMap locals: java.util.ResourceBundle
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 1 /* key */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc ": "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 3 /* resourceBundle */
            aload 1 /* key */
            invokevirtual java.util.ResourceBundle.getString:(Ljava/lang/String;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 4 /* msg */
        start local 4 // java.lang.String msg
         7: .line 76
            aload 2 /* arguments */
            ifnull 17
         8: .line 78
            aload 4 /* msg */
            aload 2 /* arguments */
            invokestatic java.text.MessageFormat.format:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            astore 4 /* msg */
         9: .line 79
            goto 17
        10: .line 80
      StackMap locals: java.lang.String java.lang.String java.lang.Object[] java.util.ResourceBundle java.lang.String
      StackMap stack: java.lang.Exception
            pop
        11: .line 81
            aload 3 /* resourceBundle */
            ldc "FormatFailed"
            invokevirtual java.util.ResourceBundle.getString:(Ljava/lang/String;)Ljava/lang/String;
            astore 4 /* msg */
        12: .line 82
            new java.lang.StringBuilder
            dup
            aload 4 /* msg */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 3 /* resourceBundle */
            aload 1 /* key */
            invokevirtual java.util.ResourceBundle.getString:(Ljava/lang/String;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 4 /* msg */
        13: .line 85
            goto 17
        end local 4 // java.lang.String msg
        14: .line 86
      StackMap locals: java.lang.String java.lang.String java.lang.Object[] java.util.ResourceBundle
      StackMap stack: java.util.MissingResourceException
            pop
        15: .line 87
            aload 3 /* resourceBundle */
            ldc "BadMessageKey"
            invokevirtual java.util.ResourceBundle.getString:(Ljava/lang/String;)Ljava/lang/String;
            astore 4 /* msg */
        start local 4 // java.lang.String msg
        16: .line 88
            new java.util.MissingResourceException
            dup
            aload 1 /* key */
            aload 4 /* msg */
            aload 1 /* key */
            invokespecial java.util.MissingResourceException.<init>:(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
            athrow
        17: .line 92
      StackMap locals: java.lang.String
      StackMap stack:
            aload 4 /* msg */
            ifnonnull 29
        18: .line 93
            aload 1 /* key */
            astore 4 /* msg */
        19: .line 94
            aload 2 /* arguments */
            arraylength
            ifle 29
        20: .line 95
            new java.lang.StringBuffer
            dup
            aload 4 /* msg */
            invokespecial java.lang.StringBuffer.<init>:(Ljava/lang/String;)V
            astore 5 /* str */
        start local 5 // java.lang.StringBuffer str
        21: .line 96
            aload 5 /* str */
            bipush 63
            invokevirtual java.lang.StringBuffer.append:(C)Ljava/lang/StringBuffer;
            pop
        22: .line 97
            iconst_0
            istore 6 /* i */
        start local 6 // int i
        23: goto 28
        24: .line 98
      StackMap locals: java.lang.StringBuffer int
      StackMap stack:
            iload 6 /* i */
            ifle 26
        25: .line 99
            aload 5 /* str */
            bipush 38
            invokevirtual java.lang.StringBuffer.append:(C)Ljava/lang/StringBuffer;
            pop
        26: .line 101
      StackMap locals:
      StackMap stack:
            aload 5 /* str */
            aload 2 /* arguments */
            iload 6 /* i */
            aaload
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            pop
        27: .line 97
            iinc 6 /* i */ 1
      StackMap locals:
      StackMap stack:
        28: iload 6 /* i */
            aload 2 /* arguments */
            arraylength
            if_icmplt 24
        end local 6 // int i
        end local 5 // java.lang.StringBuffer str
        29: .line 106
      StackMap locals:
      StackMap stack:
            aload 4 /* msg */
            areturn
        end local 4 // java.lang.String msg
        end local 3 // java.util.ResourceBundle resourceBundle
        end local 2 // java.lang.Object[] arguments
        end local 1 // java.lang.String key
        end local 0 // java.lang.String domain
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   30     0          domain  Ljava/lang/String;
            0   30     1             key  Ljava/lang/String;
            0   30     2       arguments  [Ljava/lang/Object;
            1   30     3  resourceBundle  Ljava/util/ResourceBundle;
            7   14     4             msg  Ljava/lang/String;
           16   30     4             msg  Ljava/lang/String;
           21   29     5             str  Ljava/lang/StringBuffer;
           23   29     6               i  I
      Exception table:
        from    to  target  type
           8     9      10  Class java.lang.Exception
           6    13      14  Class java.util.MissingResourceException
    Exceptions:
      throws java.util.MissingResourceException
    MethodParameters:
           Name  Flags
      domain     
      key        
      arguments  

  static java.util.ResourceBundle getResourceBundle(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/util/ResourceBundle;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.String domain
         0: .line 110
            aload 0 /* domain */
            ldc "http://www.w3.org/dom/DOMTR"
            if_acmpeq 1
            aload 0 /* domain */
            ldc "http://www.w3.org/dom/DOMTR"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 2
         1: .line 111
      StackMap locals:
      StackMap stack:
            getstatic org.apache.xerces.dom.DOMMessageFormatter.domResourceBundle:Ljava/util/ResourceBundle;
            areturn
         2: .line 113
      StackMap locals:
      StackMap stack:
            aload 0 /* domain */
            ldc "http://www.w3.org/TR/1998/REC-xml-19980210"
            if_acmpeq 3
            aload 0 /* domain */
            ldc "http://www.w3.org/TR/1998/REC-xml-19980210"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 4
         3: .line 114
      StackMap locals:
      StackMap stack:
            getstatic org.apache.xerces.dom.DOMMessageFormatter.xmlResourceBundle:Ljava/util/ResourceBundle;
            areturn
         4: .line 116
      StackMap locals:
      StackMap stack:
            aload 0 /* domain */
            ldc "http://apache.org/xml/serializer"
            if_acmpeq 5
            aload 0 /* domain */
            ldc "http://apache.org/xml/serializer"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 6
         5: .line 117
      StackMap locals:
      StackMap stack:
            getstatic org.apache.xerces.dom.DOMMessageFormatter.serResourceBundle:Ljava/util/ResourceBundle;
            areturn
         6: .line 119
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        end local 0 // java.lang.String domain
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    7     0  domain  Ljava/lang/String;
    MethodParameters:
        Name  Flags
      domain  

  public static void init();
    descriptor: ()V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=0
         0: .line 126
            getstatic org.apache.xerces.dom.DOMMessageFormatter.locale:Ljava/util/Locale;
            astore 0 /* _locale */
        start local 0 // java.util.Locale _locale
         1: .line 127
            aload 0 /* _locale */
            ifnonnull 3
         2: .line 128
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            astore 0 /* _locale */
         3: .line 130
      StackMap locals: java.util.Locale
      StackMap stack:
            ldc "org.apache.xerces.impl.msg.DOMMessages"
            aload 0 /* _locale */
            invokestatic java.util.ResourceBundle.getBundle:(Ljava/lang/String;Ljava/util/Locale;)Ljava/util/ResourceBundle;
            putstatic org.apache.xerces.dom.DOMMessageFormatter.domResourceBundle:Ljava/util/ResourceBundle;
         4: .line 131
            ldc "org.apache.xerces.impl.msg.XMLSerializerMessages"
            aload 0 /* _locale */
            invokestatic java.util.ResourceBundle.getBundle:(Ljava/lang/String;Ljava/util/Locale;)Ljava/util/ResourceBundle;
            putstatic org.apache.xerces.dom.DOMMessageFormatter.serResourceBundle:Ljava/util/ResourceBundle;
         5: .line 132
            ldc "org.apache.xerces.impl.msg.XMLMessages"
            aload 0 /* _locale */
            invokestatic java.util.ResourceBundle.getBundle:(Ljava/lang/String;Ljava/util/Locale;)Ljava/util/ResourceBundle;
            putstatic org.apache.xerces.dom.DOMMessageFormatter.xmlResourceBundle:Ljava/util/ResourceBundle;
         6: .line 133
            return
        end local 0 // java.util.Locale _locale
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            1    7     0  _locale  Ljava/util/Locale;

  public static void setLocale(java.util.Locale);
    descriptor: (Ljava/util/Locale;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.util.Locale dlocale
         0: .line 140
            aload 0 /* dlocale */
            putstatic org.apache.xerces.dom.DOMMessageFormatter.locale:Ljava/util/Locale;
         1: .line 141
            return
        end local 0 // java.util.Locale dlocale
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0  dlocale  Ljava/util/Locale;
    MethodParameters:
         Name  Flags
      dlocale  
}
SourceFile: "DOMMessageFormatter.java"