xapn/java-programming

POC (Proof Of Concept) and Code Katas with samples for programming in Java.

java-programming's Issues

Write license informations

Put the name of the license at the home page of the project, with a link to the complete license (http://www.gnu.org/licences/gpl.html for the GPL).
Put the complete license in a file embedded by the software.
Put a license note with informations about copyright : date, author, path of the complete license.

In addition, each source code file shall provide the copyright date, the author, the license name and where to find the complete license.

User story board webapp with Struts 2

Creating a DSL

A DSL is a Domain-Specific Language.

Creating DSLs in Java:

• Part 1: What is a domain-specific language?
• Part 2: Fluency and context
• Part 3: Internal and external DSLs
• Part 4: Where metaprogramming matters

Volatile versus Synchronized

Using Lombok

See the web site of the project Lombok at the following URL: http://projectlombok.org/

Wrapping an Ant build with Maven

Converting timestamps with Pretty Time

From the web site http://ocpsoft.com/prettytime/ :
Convert elapsed timestamps, like, “in 3 minutes!”
PrettyTime is an OpenSource time formatting library. Completely customizable, PrettyTime creates human readable, relative timestamps like those seen on Digg, Twitter, and Facebook.

Java 6 Annotations

Serializing objects to XML with XStream

XStream is a simple library to serialize objects to XML and back again.
See the web site at the following URL: http://xstream.codehaus.org/

Reading configuration data with Apache Commons Configuration

From the web site at the following URL: https://commons.apache.org/configuration/index.html
The Commons Configuration software library provides a generic configuration interface which enables a Java application to read configuration data from a variety of sources. Commons Configuration provides typed access to single, and multi-valued configuration parameters.

Java 5 Annotations

How to use the JDK meta-annotations: @Documented, @Inherited, @Retention, @Target.
How to create a @TODO annotation to mark any uncompleted source code.
How to create an @EmptyConstructor annotation to mark a class that has to have an empty constructor and to verify this during compilation.

FooBarQix from CodeStory

Write a program that displays the numbers between 1 and 100, one number per row. The rules follows:

• If a number is divisible by 3 or contains 3, write "Foo" instead of 3.
• If a number is divisible by 5 or contains 5, write "Bar" instead of 5.
• If a number is divisible by 7 or contains 7, write "Qix" instead of 7.
• One looks for the divisors before the content (ex: 51 -> FooBar).
• One looks for the divisors according the following order: Foo, Bar, then Qix (ex: 21 -> FooQix).
• One analyzes the content according to its order (ex: 53 -> BarFoo).

For example:
1
2
FooFoo
4
BarBar
Foo
QixQix
8
Foo
Bar
...

Code Story challenge : http://www.code-story.net/2011/11/16/foobarqix.html

Wrapping a Maven POM with Ant

Developing a custom plugin for Maven 2