http://nurkiewicz.blogspot.com/2010/10/functional-java-developers-day-2010.html

Book-decompiled.java

//$ javap -c Book
//...

public Book(java.lang.String, java.lang.String, int);
  Code:
   0:   aload_0
   1:   aload_1
   2:   putfield        #28; //Field author:Ljava/lang/String;
   5:   aload_0
   6:   aload_2
   7:   putfield        #35; //Field title:Ljava/lang/String;
   10:  aload_0
   11:  iload_3
   12:  putfield        #38; //Field year:I
   15:  aload_0
   16:  invokespecial   #49; //Method java/lang/Object."<init>":()V
   19:  return

}

Book.java

//$ javap -private Book

Compiled from "Book.scala"
public class Book extends java.lang.Object implements scala.ScalaObject{
    private final java.lang.String author;
    private final java.lang.String title;
    private final int year;
    public java.lang.String toString();
    public Book(java.lang.String, java.lang.String, int);
}

Book.scala

import org.apache.commons.lang.builder._

class Book(author: String, title: String, year: Int) {

  override def toString =
    new ToStringBuilder()
      .append("author", author)
      .append("title", title)
      .append("year", year)
      .toString()
}

capitalize.scala

def capitalizeAfterHash(list: List[Char]): List[Char] =
  list match {
    case '#' :: rest =>
      rest.map(_.toUpper)
    case _ :: rest =>
      capitalizeAfterHash(rest)
    case Nil =>
      Nil
  }

println(capitalizeAfterHash('a' :: 'b' :: '#' :: 'c' :: 'd' :: Nil))
println(capitalizeAfterHash('#' :: 'c' :: 'd' :: Nil))
println(capitalizeAfterHash('a' :: 'b' :: Nil))