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.util.text.LocatorFormatter implements org.apache.fop.util.text.AdvancedMessageFormat$ObjectFormatter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.util.text.LocatorFormatter
  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.apache.fop.util.text.LocatorFormatter this
         0: .line 29
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.apache.fop.util.text.LocatorFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/util/text/LocatorFormatter;

  public void format(java.lang.StringBuffer, java.lang.Object);
    descriptor: (Ljava/lang/StringBuffer;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=3
        start local 0 // org.apache.fop.util.text.LocatorFormatter this
        start local 1 // java.lang.StringBuffer sb
        start local 2 // java.lang.Object obj
         0: .line 33
            aload 2 /* obj */
            checkcast org.xml.sax.Locator
            astore 3 /* loc */
        start local 3 // org.xml.sax.Locator loc
         1: .line 34
            aload 1 /* sb */
            aload 3 /* loc */
            invokeinterface org.xml.sax.Locator.getLineNumber:()I
            invokevirtual java.lang.StringBuffer.append:(I)Ljava/lang/StringBuffer;
            ldc ":"
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 3 /* loc */
            invokeinterface org.xml.sax.Locator.getColumnNumber:()I
            invokevirtual java.lang.StringBuffer.append:(I)Ljava/lang/StringBuffer;
            pop
         2: .line 35
            return
        end local 3 // org.xml.sax.Locator loc
        end local 2 // java.lang.Object obj
        end local 1 // java.lang.StringBuffer sb
        end local 0 // org.apache.fop.util.text.LocatorFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/fop/util/text/LocatorFormatter;
            0    3     1    sb  Ljava/lang/StringBuffer;
            0    3     2   obj  Ljava/lang/Object;
            1    3     3   loc  Lorg/xml/sax/Locator;
    MethodParameters:
      Name  Flags
      sb    
      obj   

  public boolean supportsObject(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // org.apache.fop.util.text.LocatorFormatter this
        start local 1 // java.lang.Object obj
         0: .line 39
            aload 1 /* obj */
            instanceof org.xml.sax.Locator
            ireturn
        end local 1 // java.lang.Object obj
        end local 0 // org.apache.fop.util.text.LocatorFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/util/text/LocatorFormatter;
            0    1     1   obj  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      obj   
}
SourceFile: "LocatorFormatter.java"
InnerClasses:
  public abstract ObjectFormatter = org.apache.fop.util.text.AdvancedMessageFormat$ObjectFormatter of org.apache.fop.util.text.AdvancedMessageFormat