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Author Archives: Martin Mois

Martin is a Java EE enthusiast and works for an international operating company. He is interested in clean code and the software craftsmanship approach. He also strongly believes in automated testing and continuous integration.

API design and performance

When you design a new API you have to take a lot of decisions. These decisions are based on a number of design principles. Joshua Bloch has summarized some of them in his presentation “How to Design a Good API and Why it Matters”. The main principles he mentions are:             Easy to learn Easy ...

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JSON Processing (JSON-P) Tutorial

JSON (JavaScript Object Notation) is a compact text file format that can be used to store and transfer data. It has become very popular over the years as it is very simple to read and parse. Beyond that each JSON construct should be valid JavaScript and it should be possible to evaluate it using JavaScript’s eval() function. The latter has ...

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Injecting configuration values using CDI’s InjectionPoint

java-interview-questions-answers

Dependency injection is a great technology for the organization of class dependencies. All class instances you need in your current class are provided at runtime from the DI container. But what about your configuration? Of course, you can create a “Configuration” class and inject this class everywhere you need it and get the necessary value(s) from it. But CDI lets ...

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Implementing dynamic proxies – a comparison

Sometimes there is the need to intercept certain method calls in order to execute your own logic everytime the intercepted method is called. If you are not within in Java EE’s CDI world and don’t want to use AOP frameworks like aspectj, you have a simple and similar effective alternative. Since version 1.5 the JDK comes with the class java.lang.reflect.Proxy ...

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Securing a JSF application with Java EE security and JBoss AS 7.x

A common requirement for enterprise applications is to have all JSF pages protected behind a login page. Sometimes you even want to have protected areas inside the application that are only accessible by users that own a specific role. The Java EE standards come with all the means you need to implement a web application that is protected by some security ...

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Building and testing a websocket server with undertow

java-interview-questions-answers

The upcoming version of JBoss Application Server will no longer use Tomcat as integrated webserver, but will replace it with undertow. The architecture of undertow is based on handlers that can be added dynamically via a Builder API to the server. This approach is similar to the way of constructing a webserver in Node.js. It allows developers to embed the ...

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