The First Year

class HelloWorld
{
public static void main(String args[])
{
// Displays "Hello World!" on the console.
System.out.println("Hello World!");
}
}

The Second Year

/**
* Hello world class
*
* Used to display the phrase "Hello World" in a console.
*
* @author Sean
*/
class HelloWorld
{
/**
* The phrase to display in the console
*/
public static final string PHRASE = "Hello World!";

/**
* Main method
*
* @param args Command line arguments
* @return void
*/
public static void main(String args[])
{
// Display our phrase in the console.
System.out.println(PHRASE);
}
}

The Third Year

/**
* Hello world class
*
* Used to display the phrase "Hello World" in a console.
*
* @author Sean
* @license LGPL
* @version 1.2
* @see System.out.println
* @see README
* @todo Create factory methods
* @link https://github.com/sean/helloworld
*/
class HelloWorld
{
/**
* The default phrase to display in the console
*/
public static final string PHRASE = "Hello World!";

/**
* The phrase to display in the console
*/
private string hello_world = null;

/**
* Constructor
*
* @param hw The phrase to display in the console
*/
public HelloWorld(string hw)
{
hello_world = hw;
}

/**
* Display the phrase "Hello World!" in a console
*
* @return void
*/
public void sayPhrase()
{
// Display our phrase in the console.
System.out.println(hello_world);
}

/**
* Main method
*
* @param args Command line arguments
* @return void
*/
public static void main(String args[])
{
HelloWorld hw = new HelloWorld(PHRASE);
try {
        hw.sayPhrase();
} catch (Exception e) {
        // Do nothing!
}
}
}

The Fifth Year

/**
* Enterprise Hello World class v2.2
*
* Provides an enterprise ready, scalable buisness solution
* for display the phrase "Hello World!" in a console.
*
* IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED
* TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER
* PARTY WHO MAY MODIFY AND/OR REDISTRIVUTE THE LIBRARY AS
* PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
* ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
* DAMAGES ATRISING OUT OF THE USE OR INABILITY TO USE THE
* LIBRAY (INCLUDING BUT LIMITED TO LOSS OF DATA OR
* DATA BEINT RENDERED INACCURATE OR LOSSES SUSTAINED BY
* YOU OR THIRD PARTIES OR A FAILURE OF THE LIBRARY TO
* OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER
* OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGES.
*
* @author Sean
* @license LGPL
* @version 2.2
* @see System.out.println
* @see README
* @see license.txt
* @todo Test of OS compatibility
* @link https://github.com/sean-inc/helloworld
*/
class HelloWorld
{
/**
* The first phrase
*/
public static final string PHRASE_HELLO = "Hello";

/**
* The second phrase
*/
public static final string PHRASE_WORLD = "World";

/**
* The first word in our phrase
*/
private Word hello = null;

/**
* The second word in our phrase
*/
private Word world = null;

/**
* Constructor
*
* @param hello First word to display in the console
* @param world Second word to display in the console
*/
public HelloWorld(Word hello, Word world)
{
this.hello = hello;
this.world = world;
}

/**
* Display the phrase "Hello World!" in a console
*
* @return void
*/
public void sayPhrase()
{
// Display our phrase in the console.
string first  = this.hello.toString();
string second = this.world.toString();
System.out.println(first + " " + second + "!");
}

/**
* Sets the phrase to use for hello
*
* @param h The first phrase
* @return void
*/
public void setHello(string h)
{
this.hello.setWord(h);
}

/**
* Gets the phrase to use for hello
*
* @return Word
*/
public Word getHello()
{
return this.hello;
}

/**
* Sets the phrase to use for world
*
* @param w The second phrase
* @return void
*/
public void setWorld(string w)
{
this.world.setWord(w);
}

/**
* Gets the phrase to use for world
*
* @return Word
*/
public Word getHello()
{
return this.world;
}

/**
* Main method
*
* @param args Command line arguments
* @return void
*/
public static void main(String args[])
{
// Create a new dic so we can display our phrase on the
// command line.
DIC d = DependencyInjectionContainer::factory();
HelloWorld hw = null;

try {
        hw = d.newInstance(HelloWorld.class);
} catch (DICInstanceException e) {
        System.err.println("There was an error creating an instance of HelloWorld.");
        return;
}

try {
        hw.setHello(PHRASE_HELLO);
        hw.setWorld(PHRASE_WORLD);
        hw.sayPhrase();
} catch (IOException e) {
        System.err.println("There was an IO error.");
} catch (ConsoleException e) {
        System.err.println("There was a console error.");
} catch (Exception e) {
        System.err.println("There was an unknown error.");
}
}
}

<beans xmlns="http://www.framework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.framework.org/schema/beans
http://www.framework.org/schema/beans/beans-2.5.xsd
http://www.framework.org/schema/context
http://www.framework.org/schema/context/context-2.5.xsd">
<context:annotation-config />
<bean id="HelloWorldBean" class="com.sean-inc">
<property name="hello" value="Word" />
<property name="world" value="Word" />
</bean>
</beans>

The Tenth Year

/**
* Used to display the phrase "Hello World!" in a console
*
* @author Sean
* @see README
*/
class HelloWorld
{
public static void main(String args[])
{
System.out.println("Hello World!");
}
}