http://xmlgraphics.apache.org/commons/: Apache XML Graphics Commons is a library that consists of several reusable components used by Apache Batik and Apache FOP. Many of these components can easily be used separately outside the domains of SVG and XSL-FO. (Apache Software Foundation) 
public final class org.apache.xmlgraphics.util.DateFormatUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.xmlgraphics.util.DateFormatUtil
  super_class: java.lang.Object
{
  private static final java.lang.String ISO_8601_DATE_PATTERN;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "yyyy-MM-dd'T'HH:mm:ss"

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.xmlgraphics.util.DateFormatUtil this
         0: .line 31
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 32
            return
        end local 0 // org.apache.xmlgraphics.util.DateFormatUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xmlgraphics/util/DateFormatUtil;

  public static java.lang.String formatPDFDate(java.util.Date, java.util.TimeZone);
    descriptor: (Ljava/util/Date;Ljava/util/TimeZone;)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // java.util.Date date
        start local 1 // java.util.TimeZone timeZone
         0: .line 41
            ldc "'D:'yyyyMMddHHmmss"
            aload 1 /* timeZone */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.createDateFormat:(Ljava/lang/String;Ljava/util/TimeZone;)Ljava/text/DateFormat;
            astore 2 /* dateFormat */
        start local 2 // java.text.DateFormat dateFormat
         1: .line 42
            aload 0 /* date */
            aload 2 /* dateFormat */
            bipush 39
            iconst_1
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.formatDate:(Ljava/util/Date;Ljava/text/DateFormat;CZ)Ljava/lang/String;
            areturn
        end local 2 // java.text.DateFormat dateFormat
        end local 1 // java.util.TimeZone timeZone
        end local 0 // java.util.Date date
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    2     0        date  Ljava/util/Date;
            0    2     1    timeZone  Ljava/util/TimeZone;
            1    2     2  dateFormat  Ljava/text/DateFormat;
    MethodParameters:
          Name  Flags
      date      
      timeZone  

  public static java.lang.String formatISO8601(java.util.Date, java.util.TimeZone);
    descriptor: (Ljava/util/Date;Ljava/util/TimeZone;)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // java.util.Date date
        start local 1 // java.util.TimeZone timeZone
         0: .line 52
            ldc "yyyy-MM-dd'T'HH:mm:ss"
            aload 1 /* timeZone */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.createDateFormat:(Ljava/lang/String;Ljava/util/TimeZone;)Ljava/text/DateFormat;
            astore 2 /* dateFormat */
        start local 2 // java.text.DateFormat dateFormat
         1: .line 53
            aload 0 /* date */
            aload 2 /* dateFormat */
            bipush 58
            iconst_0
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.formatDate:(Ljava/util/Date;Ljava/text/DateFormat;CZ)Ljava/lang/String;
            areturn
        end local 2 // java.text.DateFormat dateFormat
        end local 1 // java.util.TimeZone timeZone
        end local 0 // java.util.Date date
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    2     0        date  Ljava/util/Date;
            0    2     1    timeZone  Ljava/util/TimeZone;
            1    2     2  dateFormat  Ljava/text/DateFormat;
    MethodParameters:
          Name  Flags
      date      
      timeZone  

  private static java.text.DateFormat createDateFormat(java.lang.String, java.util.TimeZone);
    descriptor: (Ljava/lang/String;Ljava/util/TimeZone;)Ljava/text/DateFormat;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // java.lang.String format
        start local 1 // java.util.TimeZone timeZone
         0: .line 57
            new java.text.SimpleDateFormat
            dup
            aload 0 /* format */
            getstatic java.util.Locale.ENGLISH:Ljava/util/Locale;
            invokespecial java.text.SimpleDateFormat.<init>:(Ljava/lang/String;Ljava/util/Locale;)V
            astore 2 /* dateFormat */
        start local 2 // java.text.DateFormat dateFormat
         1: .line 58
            aload 2 /* dateFormat */
            aload 1 /* timeZone */
            invokevirtual java.text.DateFormat.setTimeZone:(Ljava/util/TimeZone;)V
         2: .line 59
            aload 2 /* dateFormat */
            areturn
        end local 2 // java.text.DateFormat dateFormat
        end local 1 // java.util.TimeZone timeZone
        end local 0 // java.lang.String format
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    3     0      format  Ljava/lang/String;
            0    3     1    timeZone  Ljava/util/TimeZone;
            1    3     2  dateFormat  Ljava/text/DateFormat;
    MethodParameters:
          Name  Flags
      format    
      timeZone  

  private static java.lang.String formatDate(java.util.Date, java.text.DateFormat, char, boolean);
    descriptor: (Ljava/util/Date;Ljava/text/DateFormat;CZ)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=7, args_size=4
        start local 0 // java.util.Date date
        start local 1 // java.text.DateFormat dateFormat
        start local 2 // char delimiter
        start local 3 // boolean endWithDelimiter
         0: .line 72
            aload 1 /* dateFormat */
            invokevirtual java.text.DateFormat.getTimeZone:()Ljava/util/TimeZone;
            getstatic java.util.Locale.ENGLISH:Ljava/util/Locale;
            invokestatic java.util.Calendar.getInstance:(Ljava/util/TimeZone;Ljava/util/Locale;)Ljava/util/Calendar;
            astore 4 /* cal */
        start local 4 // java.util.Calendar cal
         1: .line 73
            aload 4 /* cal */
            aload 0 /* date */
            invokevirtual java.util.Calendar.setTime:(Ljava/util/Date;)V
         2: .line 74
            aload 4 /* cal */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.getOffsetInMinutes:(Ljava/util/Calendar;)I
            istore 5 /* offset */
        start local 5 // int offset
         3: .line 75
            new java.lang.StringBuilder
            dup
            aload 1 /* dateFormat */
            aload 0 /* date */
            invokevirtual java.text.DateFormat.format:(Ljava/util/Date;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            astore 6 /* sb */
        start local 6 // java.lang.StringBuilder sb
         4: .line 76
            aload 6 /* sb */
            iload 2 /* delimiter */
            iload 5 /* offset */
            iload 3 /* endWithDelimiter */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendOffset:(Ljava/lang/StringBuilder;CIZ)V
         5: .line 77
            aload 6 /* sb */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 6 // java.lang.StringBuilder sb
        end local 5 // int offset
        end local 4 // java.util.Calendar cal
        end local 3 // boolean endWithDelimiter
        end local 2 // char delimiter
        end local 1 // java.text.DateFormat dateFormat
        end local 0 // java.util.Date date
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    6     0              date  Ljava/util/Date;
            0    6     1        dateFormat  Ljava/text/DateFormat;
            0    6     2         delimiter  C
            0    6     3  endWithDelimiter  Z
            1    6     4               cal  Ljava/util/Calendar;
            3    6     5            offset  I
            4    6     6                sb  Ljava/lang/StringBuilder;
    MethodParameters:
                  Name  Flags
      date              
      dateFormat        
      delimiter         
      endWithDelimiter  

  private static int getOffsetInMinutes(java.util.Calendar);
    descriptor: (Ljava/util/Calendar;)I
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // java.util.Calendar cal
         0: .line 81
            aload 0 /* cal */
            bipush 15
            invokevirtual java.util.Calendar.get:(I)I
            istore 1 /* offset */
        start local 1 // int offset
         1: .line 82
            iload 1 /* offset */
            aload 0 /* cal */
            bipush 16
            invokevirtual java.util.Calendar.get:(I)I
            iadd
            istore 1 /* offset */
         2: .line 83
            iload 1 /* offset */
            ldc 60000
            idiv
            istore 1 /* offset */
         3: .line 84
            iload 1 /* offset */
            ireturn
        end local 1 // int offset
        end local 0 // java.util.Calendar cal
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0     cal  Ljava/util/Calendar;
            1    4     1  offset  I
    MethodParameters:
      Name  Flags
      cal   

  private static void appendOffset(java.lang.StringBuilder, char, int, boolean);
    descriptor: (Ljava/lang/StringBuilder;CIZ)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // java.lang.StringBuilder sb
        start local 1 // char delimiter
        start local 2 // int offset
        start local 3 // boolean endWithDelimiter
         0: .line 88
            iload 2 /* offset */
            ifne 3
         1: .line 89
            aload 0 /* sb */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendOffsetUTC:(Ljava/lang/StringBuilder;)V
         2: .line 90
            goto 4
         3: .line 91
      StackMap locals:
      StackMap stack:
            aload 0 /* sb */
            iload 1 /* delimiter */
            iload 2 /* offset */
            iload 3 /* endWithDelimiter */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendOffsetNoUTC:(Ljava/lang/StringBuilder;CIZ)V
         4: .line 93
      StackMap locals:
      StackMap stack:
            return
        end local 3 // boolean endWithDelimiter
        end local 2 // int offset
        end local 1 // char delimiter
        end local 0 // java.lang.StringBuilder sb
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    5     0                sb  Ljava/lang/StringBuilder;
            0    5     1         delimiter  C
            0    5     2            offset  I
            0    5     3  endWithDelimiter  Z
    MethodParameters:
                  Name  Flags
      sb                
      delimiter         
      offset            
      endWithDelimiter  

  private static void appendOffsetUTC(java.lang.StringBuilder);
    descriptor: (Ljava/lang/StringBuilder;)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.StringBuilder sb
         0: .line 96
            aload 0 /* sb */
            bipush 90
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         1: .line 97
            return
        end local 0 // java.lang.StringBuilder sb
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0    sb  Ljava/lang/StringBuilder;
    MethodParameters:
      Name  Flags
      sb    

  private static void appendOffsetNoUTC(java.lang.StringBuilder, char, int, boolean);
    descriptor: (Ljava/lang/StringBuilder;CIZ)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=5, args_size=4
        start local 0 // java.lang.StringBuilder sb
        start local 1 // char delimiter
        start local 2 // int offset
        start local 3 // boolean endWithDelimiter
         0: .line 101
            iload 2 /* offset */
            bipush 60
            idiv
            istore 4 /* zoneOffsetHours */
        start local 4 // int zoneOffsetHours
         1: .line 102
            aload 0 /* sb */
            iload 4 /* zoneOffsetHours */
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendOffsetSign:(Ljava/lang/StringBuilder;I)V
         2: .line 103
            aload 0 /* sb */
            iload 4 /* zoneOffsetHours */
            invokestatic java.lang.Math.abs:(I)I
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendPaddedNumber:(Ljava/lang/StringBuilder;I)V
         3: .line 104
            aload 0 /* sb */
            iload 1 /* delimiter */
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         4: .line 105
            aload 0 /* sb */
            iload 2 /* offset */
            bipush 60
            irem
            invokestatic java.lang.Math.abs:(I)I
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.appendPaddedNumber:(Ljava/lang/StringBuilder;I)V
         5: .line 106
            iload 3 /* endWithDelimiter */
            ifeq 7
         6: .line 107
            aload 0 /* sb */
            iload 1 /* delimiter */
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         7: .line 109
      StackMap locals: int
      StackMap stack:
            return
        end local 4 // int zoneOffsetHours
        end local 3 // boolean endWithDelimiter
        end local 2 // int offset
        end local 1 // char delimiter
        end local 0 // java.lang.StringBuilder sb
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    8     0                sb  Ljava/lang/StringBuilder;
            0    8     1         delimiter  C
            0    8     2            offset  I
            0    8     3  endWithDelimiter  Z
            1    8     4   zoneOffsetHours  I
    MethodParameters:
                  Name  Flags
      sb                
      delimiter         
      offset            
      endWithDelimiter  

  private static void appendOffsetSign(java.lang.StringBuilder, int);
    descriptor: (Ljava/lang/StringBuilder;I)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // java.lang.StringBuilder sb
        start local 1 // int zoneOffsetHours
         0: .line 112
            iload 1 /* zoneOffsetHours */
            iflt 3
         1: .line 113
            aload 0 /* sb */
            bipush 43
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         2: .line 114
            goto 4
         3: .line 115
      StackMap locals:
      StackMap stack:
            aload 0 /* sb */
            bipush 45
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         4: .line 117
      StackMap locals:
      StackMap stack:
            return
        end local 1 // int zoneOffsetHours
        end local 0 // java.lang.StringBuilder sb
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    5     0               sb  Ljava/lang/StringBuilder;
            0    5     1  zoneOffsetHours  I
    MethodParameters:
                 Name  Flags
      sb               
      zoneOffsetHours  

  private static void appendPaddedNumber(java.lang.StringBuilder, int);
    descriptor: (Ljava/lang/StringBuilder;I)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // java.lang.StringBuilder sb
        start local 1 // int number
         0: .line 120
            iload 1 /* number */
            bipush 10
            if_icmpge 2
         1: .line 121
            aload 0 /* sb */
            bipush 48
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         2: .line 123
      StackMap locals:
      StackMap stack:
            aload 0 /* sb */
            iload 1 /* number */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            pop
         3: .line 124
            return
        end local 1 // int number
        end local 0 // java.lang.StringBuilder sb
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0      sb  Ljava/lang/StringBuilder;
            0    4     1  number  I
    MethodParameters:
        Name  Flags
      sb      
      number  

  public static java.util.Date parseISO8601Date(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/util/Date;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // java.lang.String date
         0: .line 133
            aload 0 /* date */
            ldc "Invalid ISO 8601 date format: "
            invokestatic org.apache.xmlgraphics.util.DateFormatUtil.formatDateToParse:(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
            astore 0 /* date */
         1: .line 134
            new java.text.SimpleDateFormat
            dup
            ldc "yyyy-MM-dd'T'HH:mm:ssZ"
            invokespecial java.text.SimpleDateFormat.<init>:(Ljava/lang/String;)V
            astore 1 /* dateFormat */
        start local 1 // java.text.DateFormat dateFormat
         2: .line 136
            aload 1 /* dateFormat */
            aload 0 /* date */
            invokevirtual java.text.DateFormat.parse:(Ljava/lang/String;)Ljava/util/Date;
         3: areturn
         4: .line 137
      StackMap locals: java.lang.String java.text.DateFormat
      StackMap stack: java.text.ParseException
            pop
         5: .line 138
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Invalid ISO 8601 date format: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* date */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 1 // java.text.DateFormat dateFormat
        end local 0 // java.lang.String date
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    6     0        date  Ljava/lang/String;
            2    6     1  dateFormat  Ljava/text/DateFormat;
      Exception table:
        from    to  target  type
           2     3       4  Class java.text.ParseException
    MethodParameters:
      Name  Flags
      date  

  private static java.lang.String formatDateToParse(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // java.lang.String date
        start local 1 // java.lang.String errorMessage
         0: .line 146
            aload 0 /* date */
            ldc "Z"
            invokevirtual java.lang.String.contains:(Ljava/lang/CharSequence;)Z
            ifne 6
         1: .line 147
            aload 0 /* date */
            ldc ":"
            invokevirtual java.lang.String.lastIndexOf:(Ljava/lang/String;)I
            istore 2 /* lastColonIndex */
        start local 2 // int lastColonIndex
         2: .line 148
            iload 2 /* lastColonIndex */
            ifge 4
         3: .line 149
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            aload 1 /* errorMessage */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* date */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 151
      StackMap locals: int
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 0 /* date */
            iconst_0
            iload 2 /* lastColonIndex */
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* date */
            iload 2 /* lastColonIndex */
            iconst_1
            iadd
            aload 0 /* date */
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 0 /* date */
        end local 2 // int lastColonIndex
         5: .line 152
            goto 7
         6: .line 153
      StackMap locals:
      StackMap stack:
            aload 0 /* date */
            ldc "Z"
            ldc "+0000"
            invokevirtual java.lang.String.replace:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
            astore 0 /* date */
         7: .line 155
      StackMap locals:
      StackMap stack:
            aload 0 /* date */
            areturn
        end local 1 // java.lang.String errorMessage
        end local 0 // java.lang.String date
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    8     0            date  Ljava/lang/String;
            0    8     1    errorMessage  Ljava/lang/String;
            2    5     2  lastColonIndex  I
    MethodParameters:
              Name  Flags
      date          
      errorMessage  
}
SourceFile: "DateFormatUtil.java"