Many Java static analysis tools exist right here, each one focusing on a
specific area and each one has its advantages, we can enumerate:
Pmd which is a static rule-set based Java source code analyzer that
identifies potential problems like: Possible bugs—Empty
try/catch/finally/switch blocks. Dead code—Unused local variables,
parameters and private methods. Empty if/while statements. Overcomplicated
expressions—Unnecessary if statements, for loops that could be while loops.
Suboptimal code—Wasteful String/StringBuffer usage. FindBugs which looks
for bugs in Java code. It uses static analysis to identify hundreds of
different potential types of errors in Java programs. Checkstyle defines a
set of available modules, each of which provides rules checking with a
configurable level of strictness (mandatory, optional...). Each rule can
raise notifications, warnings, and... (more)
JRE 6 was released in 2006, five years after a major JRE version was
released. For the past few years Java was looking stagnant, and many Java
developers began to worry; this concern was amplified when Oracle purchased
We will try to discover if there's a big refactoring or maybe many features
were added that can explain the time span between these two releases. In this
first part we will focus on design and implementation changes, and the second
part will focus on added features and breaking changes.
With JavaDepend we can compare two versions and detect any modifications ... (more)
Hibernate is an open source Java persistence framework project. Perform
powerful object relational mapping and query databases using HQL and SQL.
In general the widely used libraries are well designed and implemented, and
it's very interesting to learn from them some coding best practices. Let's
take a look inside the hibernate core library and discover some of its design
keys. In this post Hibernate Core is analyzed by JArchitect to go deep inside
its design and implementation.
Package by Feature
Package-by-feature uses packages to reflect the feature set. It places all
items re... (more)
Robert C.Martin wrote an interesting article about a set of metrics that can
be used to measure the quality of an object-oriented design in terms of the
interdependence between the subsystems of that design.
Here's from the article what he said about the interdependence between
What is it that makes a design rigid, fragile and difficult to reuse. It is
the interdependence of the subsystems within that design. A design is rigid
if it cannot be easily changed. Such rigidity is due to the fact that a
single change to heavily interdependent software begins a cascade of chang... (more)
According to the MVC definition from wikipedia:
"Model View Controller (MVC) pattern creates applications that separate the
different aspects of the application (input logic, business logic, and UI
logic), while providing a loose coupling between these elements."
But if we search for MVC frameworks we found many variants: MVC1, MVC2, MVC3,
MVP, MVVM and PureMVC.
The question is which one is the best to use?
As with any debate like that, there's no unique solution as it depends on
many factors. In this article we try using JavaDepend to discover PureMVC
in-depth, and talk about th... (more)