http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public class org.apache.fop.pdf.PDFCharProcs extends org.apache.fop.pdf.PDFObject
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.pdf.PDFCharProcs
  super_class: org.apache.fop.pdf.PDFObject
{
  protected java.util.Map keys;
    descriptor: Ljava/util/Map;
    flags: (0x0004) ACC_PROTECTED

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.PDFCharProcs this
         0: .line 44
            aload 0 /* this */
            invokespecial org.apache.fop.pdf.PDFObject.<init>:()V
         1: .line 45
            aload 0 /* this */
            new java.util.HashMap
            dup
            invokespecial java.util.HashMap.<init>:()V
            putfield org.apache.fop.pdf.PDFCharProcs.keys:Ljava/util/Map;
         2: .line 46
            return
        end local 0 // org.apache.fop.pdf.PDFCharProcs this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/fop/pdf/PDFCharProcs;

  public void addCharacter(java.lang.String, org.apache.fop.pdf.PDFStream);
    descriptor: (Ljava/lang/String;Lorg/apache/fop/pdf/PDFStream;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.apache.fop.pdf.PDFCharProcs this
        start local 1 // java.lang.String name
        start local 2 // org.apache.fop.pdf.PDFStream stream
         0: .line 55
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFCharProcs.keys:Ljava/util/Map;
            aload 1 /* name */
            aload 2 /* stream */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 56
            return
        end local 2 // org.apache.fop.pdf.PDFStream stream
        end local 1 // java.lang.String name
        end local 0 // org.apache.fop.pdf.PDFCharProcs this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/apache/fop/pdf/PDFCharProcs;
            0    2     1    name  Ljava/lang/String;
            0    2     2  stream  Lorg/apache/fop/pdf/PDFStream;
    MethodParameters:
        Name  Flags
      name    
      stream  

  public byte[] toPDF();
    descriptor: ()[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.PDFCharProcs this
         0: .line 64
            iconst_0
            newarray 8
            areturn
        end local 0 // org.apache.fop.pdf.PDFCharProcs this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/PDFCharProcs;
}
SourceFile: "PDFCharProcs.java"