http://nexus.sonatype.org/oss-repository-hosting.html/ST4: StringTemplate is a java template engine for generating source code, web pages, emails, or any other formatted text output. StringTemplate is particularly good at multi-targeted code generators, multiple site skins, and internationalization/localization. It evolved over years of effort developing jGuru.com. StringTemplate also powers the ANTLR 3 and 4 code generator. Its distinguishing characteristic is that unlike other engines, it strictly enforces model-view separation. Strict separation makes websites and code generators more flexible and maintainable; it also provides an excellent defense against malicious template authors. 
public class org.stringtemplate.v4.DateRenderer implements org.stringtemplate.v4.AttributeRenderer
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.stringtemplate.v4.DateRenderer
  super_class: java.lang.Object
{
  public static final java.util.Map<java.lang.String, java.lang.Integer> formatToInt;
    descriptor: Ljava/util/Map;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/Map<Ljava/lang/String;Ljava/lang/Integer;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 42
            new org.stringtemplate.v4.DateRenderer$1
            dup
            invokespecial org.stringtemplate.v4.DateRenderer$1.<init>:()V
         1: .line 41
            putstatic org.stringtemplate.v4.DateRenderer.formatToInt:Ljava/util/Map;
         2: .line 59
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.stringtemplate.v4.DateRenderer this
         0: .line 40
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.stringtemplate.v4.DateRenderer this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/stringtemplate/v4/DateRenderer;

  public java.lang.String toString(java.lang.Object, java.lang.String, java.util.Locale);
    descriptor: (Ljava/lang/Object;Ljava/lang/String;Ljava/util/Locale;)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=8, args_size=4
        start local 0 // org.stringtemplate.v4.DateRenderer this
        start local 1 // java.lang.Object o
        start local 2 // java.lang.String formatString
        start local 3 // java.util.Locale locale
         0: .line 64
            aload 2 /* formatString */
            ifnonnull 1
            ldc "short"
            astore 2 /* formatString */
         1: .line 65
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            instanceof java.util.Calendar
            ifeq 3
            aload 1 /* o */
            checkcast java.util.Calendar
            invokevirtual java.util.Calendar.getTime:()Ljava/util/Date;
            astore 4 /* d */
        start local 4 // java.util.Date d
         2: goto 4
        end local 4 // java.util.Date d
         3: .line 66
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.util.Date
            astore 4 /* d */
        start local 4 // java.util.Date d
         4: .line 67
      StackMap locals: java.util.Date
      StackMap stack:
            getstatic org.stringtemplate.v4.DateRenderer.formatToInt:Ljava/util/Map;
            aload 2 /* formatString */
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Integer
            astore 5 /* styleI */
        start local 5 // java.lang.Integer styleI
         5: .line 69
            aload 5 /* styleI */
            ifnonnull 7
            new java.text.SimpleDateFormat
            dup
            aload 2 /* formatString */
            aload 3 /* locale */
            invokespecial java.text.SimpleDateFormat.<init>:(Ljava/lang/String;Ljava/util/Locale;)V
            astore 6 /* f */
        start local 6 // java.text.DateFormat f
         6: goto 13
        end local 6 // java.text.DateFormat f
         7: .line 71
      StackMap locals: java.lang.Integer
      StackMap stack:
            aload 5 /* styleI */
            invokevirtual java.lang.Integer.intValue:()I
            istore 7 /* style */
        start local 7 // int style
         8: .line 72
            aload 2 /* formatString */
            ldc "date:"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 10
            iload 7 /* style */
            aload 3 /* locale */
            invokestatic java.text.DateFormat.getDateInstance:(ILjava/util/Locale;)Ljava/text/DateFormat;
            astore 6 /* f */
        start local 6 // java.text.DateFormat f
         9: goto 13
        end local 6 // java.text.DateFormat f
        10: .line 73
      StackMap locals: org.stringtemplate.v4.DateRenderer java.lang.Object java.lang.String java.util.Locale java.util.Date java.lang.Integer top int
      StackMap stack:
            aload 2 /* formatString */
            ldc "time:"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 12
            iload 7 /* style */
            aload 3 /* locale */
            invokestatic java.text.DateFormat.getTimeInstance:(ILjava/util/Locale;)Ljava/text/DateFormat;
            astore 6 /* f */
        start local 6 // java.text.DateFormat f
        11: goto 13
        end local 6 // java.text.DateFormat f
        12: .line 74
      StackMap locals:
      StackMap stack:
            iload 7 /* style */
            iload 7 /* style */
            aload 3 /* locale */
            invokestatic java.text.DateFormat.getDateTimeInstance:(IILjava/util/Locale;)Ljava/text/DateFormat;
            astore 6 /* f */
        end local 7 // int style
        start local 6 // java.text.DateFormat f
        13: .line 76
      StackMap locals: org.stringtemplate.v4.DateRenderer java.lang.Object java.lang.String java.util.Locale java.util.Date java.lang.Integer java.text.DateFormat
      StackMap stack:
            aload 6 /* f */
            aload 4 /* d */
            invokevirtual java.text.DateFormat.format:(Ljava/util/Date;)Ljava/lang/String;
            areturn
        end local 6 // java.text.DateFormat f
        end local 5 // java.lang.Integer styleI
        end local 4 // java.util.Date d
        end local 3 // java.util.Locale locale
        end local 2 // java.lang.String formatString
        end local 1 // java.lang.Object o
        end local 0 // org.stringtemplate.v4.DateRenderer this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0   14     0          this  Lorg/stringtemplate/v4/DateRenderer;
            0   14     1             o  Ljava/lang/Object;
            0   14     2  formatString  Ljava/lang/String;
            0   14     3        locale  Ljava/util/Locale;
            2    3     4             d  Ljava/util/Date;
            4   14     4             d  Ljava/util/Date;
            5   14     5        styleI  Ljava/lang/Integer;
            6    7     6             f  Ljava/text/DateFormat;
            9   10     6             f  Ljava/text/DateFormat;
           11   12     6             f  Ljava/text/DateFormat;
           13   14     6             f  Ljava/text/DateFormat;
            8   13     7         style  I
    MethodParameters:
              Name  Flags
      o             
      formatString  
      locale        
}
SourceFile: "DateRenderer.java"
NestMembers:
  org.stringtemplate.v4.DateRenderer$1
InnerClasses:
  org.stringtemplate.v4.DateRenderer$1