FindBugs, Part 2: Writing custom detectors

Resources Links

Ajax
Articles
Bioinformatics-Tutorials
Database-Tutorials
Free Books
Hibernate-Tutorials
J2EE-Tutorials
J2ME-Tutorials
Java-Tutorials
JavaScript
JDBC-Tutorials
JMS-Tutorials
JSP-Tutorials
Linux-Tutorials
MS Technology
PHP
RMI-Tutorials
Servlets-Tutorials
Struts-Tutorials
Tools For Java Technology
UML-Tutorials
Web Graphics Designing
Web Hosting Tutorial
Web-Services-Tutorials

More Tutorials

JSP Tutorials
Hibernate Tutorials
Struts Tutorials
JSF Tutorials MySQL Tutorials
Spring Tutorials
EAI Tutorials
JAXB Tutorials
Web Services Tutorials
JDO Tutorials
Java Tutorials
Java Certification
Linux Tutorials
Java Servlets
WAP Tutorials
EJB Tutorials
JDBC Tutorials
Bio Informatics
Java Server Faces Java Interview Questions

Tutorial: FindBugs, Part 2: Writing custom detectors

FindBugs, Part 2: Writing custom detectors How to write custom detectors to find application-specific problems In the first article in this series, I showed you how to set up and execute FindBugs. Now we'll take a look at FindBugs' most powerful fea

Tutorial Details:

Writing custom bug detectors
Why would you want to write custom bug detectors? I was confronted with this question when I was asked to examine one team's performance problems. It became evident that the team's home-grown logging framework (like all logging frameworks) had grown over time. Originally the Loggers were called with reckless abandon. Unfortunately, as the team grew, so did the poor performance of their application because they were always creating expensive logging messages -- only to have the logging framework throw them away when it realized that logging was disabled. The standard way to handle this problem is to check first to see if logging is enabled before constructing expensive logging messages. In other words, use a guard clause like Listing 1:

Listing 1. Example of guarded logging

if(Logger.isLogging()) {
Logger.log("perf", anObjectWithExpensiveToString + anotherExpensiveToString);
}

Read Tutorial at: Click here to view the tutorial

Rate Tutorial: FindBugs, Part 2: Writing custom detectors

View Tutorial: FindBugs, Part 2: Writing custom detectors

Related Tutorials:

Survival of the fittest Jini services, Part 1 - JavaWorld April 2001
Survival of the fittest Jini services, Part 1 - JavaWorld April 2001

JSP best practices
Follow these tips for reusable and easily maintainable JavaServer Pages

A first look at JavaServer Faces, Part 2
A first look at JavaServer Faces, Part 2

The Java Web Services Tutorial
This tutorial is a beginner\'s guide to developing Web services and Web applications using the Java Web Services Developer Pack (Java WSDP).

Bug patrol
Bug patrol

JSP 2.0: The New Deal, Part 4
JSP 2.0: The New Deal, Part 4 In this final part of the "JSP 2.0: The New Deal" series, we look at two new features that make it much easier to develop custom tag libraries: tag files and the new simplified tag-handler Java API.

Extensible Code Generation with Java
Extensible Code Generation with Java Part 2 In part 1 of this series, we looked at the idea of generated code, which is code written not by hand but by another application. The appeal of generated code is that it can eliminate drudgery (and mistakes) i

FindBugs, Part 1: Improve the quality of your code
FindBugs, Part 1: Improve the quality of your code One of the problems with code quality tools is that they tend to overwhelm developers with problems that aren't really problems -- that is, false positives. When false positives occur, developers learn

FindBugs, Part 2: Writing custom detectors
FindBugs, Part 2: Writing custom detectors How to write custom detectors to find application-specific problems In the first article in this series, I showed you how to set up and execute FindBugs. Now we'll take a look at FindBugs' most powerful fea

FindBugs - A Bug Pattern Detector for Java
FindBugs - A Bug Pattern Detector for Java This is the web page for FindBugs, a program which looks for bugs in Java code. It is free software, distributed under the terms of the Lesser GNU Public License.

Creating EL-Aware Taglibs Using XDoclet
Creating EL-Aware Taglibs Using XDoclet When the JSP Tag Extensions (also known as taglibs) first came out, the only option to pass dynamic values as tag attributes was using Request Time (RT) expressions. With the advent of JSTL 1.0, another option ha

Attribute-Oriented Programming with Java 1.5, Part 1
In this article, I will consider the case of a status-bar component embedded in a GUI application. I will explore a number of different ways to implement this status reporter, starting with the traditional hard-coded idiom. Along the way, I will introduce

Java theory and practice: Kill bugs dead
Inspection tools like FindBugs provide a second layer of defense against common coding errors.

Creating JSF Custom Components
Creating JSF Custom Components This article illustrates how to build custom components for use in web applications based on JavaServer Faces (JSF). While JSF comes with a standard set of components, one of the most-publicized features is the easy additio

Taming Tiger, Part 3
J2SE 5—code named "Tiger"—is the most significant revision to the Java language since its original inception. Tarak Modi's primary goal with his three-part series on Tiger is to familiarize readers with J2SE 5's most important additions and show how t

Extend JavaSound to Play MP3, Ogg Vorbis, and More
This article deals with this plugin architecture and API, how to write and use a custom SPI implementation, how metadata such as title, artist, and copyright are exposed, and how multiple SPI implementations could be integrated in an application such as p

Annotations in Tiger, Part 2: Custom annotations
Write your own annotations in Java 5 Part 1 of this series introduced annotations, the new metadata facility in J2SE 5.0, and focused on Tiger's basic built-in annotations. A more powerful related feature is support for writing your own annotations. In t

Strut your stuff with JSP tags
Learn how to use the custom tags from the open source Struts library and create extensions that ease the coding of properties associated with field values and user input validation. The Struts package is part of the open source Jakarta project.

Write custom appenders for log4j
The Apache Software Foundation's log4j logging library is one of the better logging systems around. It's both easier to use and more flexible than Java's built-in logging system.

Caching Dynamic Content with JSP 2.0
Server-side caching is a powerful and popular technique for improving the performance of server-side applications. After all, why compute twice what you can compute once and hang on to? Andrei Cioroianu shows you how to exploit this technique in JSP 2.0.

Site navigation