Building up towards the end of a Java course, I've been very much teaching the spirit of Java where code is delegated to classes and leaves the main application as a few short method calls, making it readable in its own right, and allowing code that uses the same data type to be shared between programs. Here's my main program:

  import java.util.*;
  
  public class Framework {
  
  public static void main (String [] args) {
  
    MyStream StationSource = new MyStream("rstats2014.xyz");
    HashMap NationalRail = Station.factory(StationSource);
    System.out.println(NationalRail.get("LAS"));
  
    ArrayList Codes = MyUtils.sortedList(NationalRail);
    MyUtils.print(NationalRail,Codes);
  
    }
  }

Complete code for this (and the three classes used) [here] and an earlier stage [here].
(written 2015-02-18, updated 2015-02-19)

 Q907 - Object Orientation and General technical topics - Object Orientation: Design Techniques
  [80] OO - real benefits - (2004-10-09)
  [236] Tapping in on resources - (2005-03-05)
  [507] Introduction to Object Oriented Programming - (2005-11-27)
  [534] Design - one name, one action - (2005-12-19)
  [656] Think about your design even if you don't use full UML - (2006-03-24)
  [747] The Fag Packet Design Methodology - (2006-06-06)
  [831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13)
  [836] Build on what you already have with OO - (2006-08-17)
  [1047] Maintainable code - some positive advice - (2007-01-21)
  [1217] What are factory and singleton classes? - (2007-06-04)
  [1224] Object Relation Mapping (ORM) - (2007-06-09)
  [1435] Object Oriented Programming in Perl - Course - (2007-11-18)
  [1528] Object Oriented Tcl - (2008-02-02)
  [1538] Teaching Object Oriented Java with Students and Ice Cream - (2008-02-12)
  [2169] When should I use OO techniques? - (2009-05-11)
  [2170] Designing a heirarcy of classes - getting inheritance right - (2009-05-11)
  [2327] Planning! - (2009-08-08)
  [2380] Object Oriented programming - a practical design example - (2009-08-27)
  [2501] Simples - (2009-11-12)
  [2523] Plan your application before you start - (2009-12-02)
  [2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11)
  [2741] What is a factory? - (2010-04-26)
  [2747] Containment, Associative Objects, Inheritance, packages and modules - (2010-04-30)
  [2785] The Light bulb moment when people see how Object Orientation works in real use - (2010-05-28)
  [2865] Relationships between Java classes - inheritance, packaging and others - (2010-07-10)
  [2878] Program for reliability and efficiency - do not duplicate, but rather share and re-use - (2010-07-19)
  [2889] Should Python classes each be in their own file? - (2010-07-27)
  [2953] Turning an exercise into the real thing with extreme programming - (2010-09-11)
  [2977] What is a factory method and why use one? - Example in Ruby - (2010-09-30)
  [3063] Comments in and on Perl - a case for extreme OO programming - (2010-11-21)
  [3085] Object Oriented Programming for Structured Programmers - conversion training - (2010-12-14)
  [3260] Ruby - a training example that puts many language elements together to demonstrate the whole - (2011-04-23)
  [3454] Your PHP website - how to factor and refactor to reduce growing pains - (2011-09-24)
  [3607] Designing your application - using UML techniques - (2012-02-11)
  [3760] Why you should use objects even for short data manipulation programs in Ruby - (2012-06-10)
  [3763] Spike solutions and refactoring - a Python example - (2012-06-13)
  [3798] When you should use Object Orientation even in a short program - Python example - (2012-07-06)
  [3844] Rooms ready for guests - each time, every time, thanks to good system design - (2012-08-20)
  [3878] From Structured to Object Oriented Programming. - (2012-10-02)
  [3887] Inheritance, Composition and Associated objects - when to use which - Python example - (2012-10-10)
  [3928] Storing your intermediate data - what format should you you choose? - (2012-11-20)
  [3978] Teaching OO - how to avoid lots of window switching early on - (2013-01-17)
  [4098] Using object orientation for non-physical objects - (2013-05-22)
  [4374] Test driven development, and class design, from first principles (using C++) - (2014-12-30)
  [4449] Spike solution, refactoring into encapsulated object methods - good design practise - (2015-03-05)
  [4628] Associative objects - one object within another. - (2016-01-20)

J715 - Putting the Java Language Together
  [1181] Good Programming practise - where to initialise variables - (2007-05-09)
  [2735] Type checking, Java arrays and collections - (2010-04-23)
  [4326] Learning to program - comments, documentation and test code - (2014-11-22)

J050 - Java - General
  [2087] Comparing Java Courses - what can we do? - (2009-03-17)
  [2091] C, C++ and C# ... Java and JavaScript - (2009-03-20)
  [2114] Which Version of Java am I running? - (2009-04-02)
  [2417] Java Programming Fundamentals - (2009-09-24)
  [2420] Exceptions in Java - why and how - (2009-09-24)
  [2504] Learning to program in ... - (2009-11-15)
  [2861] MySQL and Java - connectivity past, present, and future thoughts - (2010-07-09)
  [3573] New in Java 7 - and why we are not running public Java 7 courses - (2012-01-08)
  [4305] Learning to program in Java - yes, we can help. - (2014-09-26)
  [4317] Java - an update of the basics - (2014-11-16)
  [4412] Java -making sure you have the right versions - (2015-02-02)

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Public training courses - upcoming dates
Different views of a Welsh Valley - but headed home
Java web application for teaching - now with sessions and clustering / load balancing demonstrations
A Java servlet that is also a stand alone program. And a server that is also a web client.
The spirit of Java - delegating to classes
Wind Turbines - beauty or menace?
Using the lead - passing arrays and other collections in Java
Java example - for loop and conditionals from course exercise
FileMaker Day to Unix Time conversion
A Welsh valley - what the transport looks like in 2015