core java
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script
Modify Java object in script
With this example we are going to demonstrate how to modify a Java object in script. In short, to modify…
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script
Import package in script
In this example we shall show you how to import a package in script. We are using the ScriptEngine interface, that…
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script
Evaluate a script file
With this example we are going to demonstrate how to evaluate a simple script file in Java. We are using…
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script
Invoke specific script function
This is an example of how to invoke a specific script function. We are using the ScriptEngine interface that provides methods…
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script
Access Java Object from a script
In this example we shall show you how to access a Java Object from a script. We are using the…
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decorator
Java EE 6 Decorators advanced usage
The example we’ll use is a Social media feed processor. So I have created an interface:  public interface SocialFeedProcessor…
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decorator
Decorating classes at injection time with Java EE 6
Let’s say you have a ticket service that lets you order tickets for a certain event. The TicketService handles the…
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strategy
Implement a shopping cart using the Strategy Pattern
First a definition: in the simplest terms, you can define the Strategy Pattern as telling an object to do a…
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cajo
client server communication example
The Server.java import gnu.cajo.Cajo; // The cajo implementation of the Grail public class Server { public static class Test {…
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aspectj
Logging aspect example
Once upon time I was writing a plugin for a closed-source LMS J2EE application having such dependencies that it wasn’t…
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