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.StringRenderer implements org.stringtemplate.v4.AttributeRenderer<java.lang.Object>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.stringtemplate.v4.StringRenderer
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.stringtemplate.v4.StringRenderer this
         0: .line 43
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.stringtemplate.v4.StringRenderer this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/stringtemplate/v4/StringRenderer;

  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=4, args_size=4
        start local 0 // org.stringtemplate.v4.StringRenderer this
        start local 1 // java.lang.Object value
        start local 2 // java.lang.String formatString
        start local 3 // java.util.Locale locale
         0: .line 49
            aload 0 /* this */
            aload 1 /* value */
            checkcast java.lang.String
            aload 2 /* formatString */
            aload 3 /* locale */
            invokevirtual org.stringtemplate.v4.StringRenderer.toString:(Ljava/lang/String;Ljava/lang/String;Ljava/util/Locale;)Ljava/lang/String;
            areturn
        end local 3 // java.util.Locale locale
        end local 2 // java.lang.String formatString
        end local 1 // java.lang.Object value
        end local 0 // org.stringtemplate.v4.StringRenderer this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    1     0          this  Lorg/stringtemplate/v4/StringRenderer;
            0    1     1         value  Ljava/lang/Object;
            0    1     2  formatString  Ljava/lang/String;
            0    1     3        locale  Ljava/util/Locale;
    MethodParameters:
              Name  Flags
      value         
      formatString  
      locale        

  public java.lang.String toString(java.lang.String, java.lang.String, java.util.Locale);
    descriptor: (Ljava/lang/String;Ljava/lang/String;Ljava/util/Locale;)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=4
        start local 0 // org.stringtemplate.v4.StringRenderer this
        start local 1 // java.lang.String value
        start local 2 // java.lang.String formatString
        start local 3 // java.util.Locale locale
         0: .line 54
            aload 2 /* formatString */
            ifnonnull 1
            aload 1 /* value */
            areturn
         1: .line 55
      StackMap locals:
      StackMap stack:
            aload 2 /* formatString */
            ldc "upper"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 2
            aload 1 /* value */
            aload 3 /* locale */
            invokevirtual java.lang.String.toUpperCase:(Ljava/util/Locale;)Ljava/lang/String;
            areturn
         2: .line 56
      StackMap locals:
      StackMap stack:
            aload 2 /* formatString */
            ldc "lower"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 3
            aload 1 /* value */
            aload 3 /* locale */
            invokevirtual java.lang.String.toLowerCase:(Ljava/util/Locale;)Ljava/lang/String;
            areturn
         3: .line 57
      StackMap locals:
      StackMap stack:
            aload 2 /* formatString */
            ldc "cap"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 7
         4: .line 58
            aload 1 /* value */
            invokevirtual java.lang.String.length:()I
            ifle 5
            new java.lang.StringBuilder
            dup
            aload 1 /* value */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            invokestatic java.lang.Character.toUpperCase:(C)C
            invokestatic java.lang.String.valueOf:(C)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* value */
            iconst_1
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            goto 6
      StackMap locals:
      StackMap stack:
         5: aload 1 /* value */
      StackMap locals:
      StackMap stack: java.lang.String
         6: areturn
         7: .line 60
      StackMap locals:
      StackMap stack:
            aload 2 /* formatString */
            ldc "url-encode"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 11
         8: .line 62
            aload 1 /* value */
            ldc "UTF-8"
            invokestatic java.net.URLEncoder.encode:(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
         9: areturn
        10: .line 63
      StackMap locals:
      StackMap stack: java.io.UnsupportedEncodingException
            pop
        11: .line 67
      StackMap locals:
      StackMap stack:
            aload 2 /* formatString */
            ldc "xml-encode"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 13
        12: .line 68
            aload 1 /* value */
            invokestatic org.stringtemplate.v4.StringRenderer.escapeHTML:(Ljava/lang/String;)Ljava/lang/String;
            areturn
        13: .line 70
      StackMap locals:
      StackMap stack:
            aload 3 /* locale */
            aload 2 /* formatString */
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 1 /* value */
            aastore
            invokestatic java.lang.String.format:(Ljava/util/Locale;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            areturn
        end local 3 // java.util.Locale locale
        end local 2 // java.lang.String formatString
        end local 1 // java.lang.String value
        end local 0 // org.stringtemplate.v4.StringRenderer this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0   14     0          this  Lorg/stringtemplate/v4/StringRenderer;
            0   14     1         value  Ljava/lang/String;
            0   14     2  formatString  Ljava/lang/String;
            0   14     3        locale  Ljava/util/Locale;
      Exception table:
        from    to  target  type
           8     9      10  Class java.io.UnsupportedEncodingException
    MethodParameters:
              Name  Flags
      value         
      formatString  
      locale        

  public static java.lang.String escapeHTML(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=7, args_size=1
        start local 0 // java.lang.String s
         0: .line 74
            aload 0 /* s */
            ifnonnull 2
         1: .line 75
            aconst_null
            areturn
         2: .line 77
      StackMap locals:
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 0 /* s */
            invokevirtual java.lang.String.length:()I
            invokespecial java.lang.StringBuilder.<init>:(I)V
            astore 1 /* buf */
        start local 1 // java.lang.StringBuilder buf
         3: .line 78
            aload 0 /* s */
            invokevirtual java.lang.String.length:()I
            istore 2 /* len */
        start local 2 // int len
         4: .line 79
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         5: goto 29
         6: .line 80
      StackMap locals: java.lang.StringBuilder int int
      StackMap stack:
            aload 0 /* s */
            iload 3 /* i */
            invokevirtual java.lang.String.charAt:(I)C
            istore 4 /* c */
        start local 4 // char c
         7: .line 81
            iload 4 /* c */
            lookupswitch { // 6
                    9: 14
                   10: 14
                   13: 14
                   38: 8
                   60: 10
                   62: 12
              default: 16
          }
         8: .line 83
      StackMap locals: int
      StackMap stack:
            aload 1 /* buf */
            ldc "&amp;"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         9: .line 84
            goto 28
        10: .line 86
      StackMap locals:
      StackMap stack:
            aload 1 /* buf */
            ldc "&lt;"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        11: .line 87
            goto 28
        12: .line 89
      StackMap locals:
      StackMap stack:
            aload 1 /* buf */
            ldc "&gt;"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        13: .line 90
            goto 28
        14: .line 94
      StackMap locals:
      StackMap stack:
            aload 1 /* buf */
            iload 4 /* c */
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        15: .line 95
            goto 28
        16: .line 97
      StackMap locals:
      StackMap stack:
            iload 4 /* c */
            bipush 32
            if_icmpge 17
            iconst_1
            goto 18
      StackMap locals:
      StackMap stack:
        17: iconst_0
      StackMap locals:
      StackMap stack: int
        18: istore 5 /* control */
        start local 5 // boolean control
        19: .line 98
            iload 4 /* c */
            bipush 126
            if_icmple 20
            iconst_1
            goto 21
      StackMap locals: int
      StackMap stack:
        20: iconst_0
      StackMap locals:
      StackMap stack: int
        21: istore 6 /* aboveASCII */
        start local 6 // boolean aboveASCII
        22: .line 99
            iload 5 /* control */
            ifne 23
            iload 6 /* aboveASCII */
            ifeq 27
        23: .line 100
      StackMap locals: int
      StackMap stack:
            aload 1 /* buf */
            ldc "&#"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        24: .line 101
            aload 1 /* buf */
            iload 4 /* c */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            pop
        25: .line 102
            aload 1 /* buf */
            ldc ";"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        26: .line 103
            goto 28
        27: .line 104
      StackMap locals:
      StackMap stack:
            aload 1 /* buf */
            iload 4 /* c */
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        end local 6 // boolean aboveASCII
        end local 5 // boolean control
        end local 4 // char c
        28: .line 79
      StackMap locals:
      StackMap stack:
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
        29: iload 3 /* i */
            iload 2 /* len */
            if_icmplt 6
        end local 3 // int i
        30: .line 107
            aload 1 /* buf */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 2 // int len
        end local 1 // java.lang.StringBuilder buf
        end local 0 // java.lang.String s
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   31     0           s  Ljava/lang/String;
            3   31     1         buf  Ljava/lang/StringBuilder;
            4   31     2         len  I
            5   30     3           i  I
            7   28     4           c  C
           19   28     5     control  Z
           22   28     6  aboveASCII  Z
    MethodParameters:
      Name  Flags
      s     
}
Signature: Ljava/lang/Object;Lorg/stringtemplate/v4/AttributeRenderer<Ljava/lang/Object;>;
SourceFile: "StringRenderer.java"