I’ve previously written on the benefits of static analysis of java code with the use of PMD and FindBugs. I was recently turned on to a new tool that performs similar testing of code within the Eclipse IDE.
When I first found this tool it was free, since that time it’s come out of beta and is now a little costly, but it may still be worth it due to the functionality it provides.
The premise of this tool is a little different than other ones, while it covers much of the same need, it also performs many tests that I would previously use CheckStyle to do. This only provides them at runtime and in a common manner within the IDE.
Categories: WebStandards, Work analysis, code, eclipse, ide, java, javadoc, performance, plugin, standards, static
I typically use the open-source Eclipse IDE for most of my Java and PHP work. For my corporate work, this means that I use IBM’s packaged RAD and WSAD offerings that are based on various versions of the Eclipse framework.
When working on Internationalized (I18n) applications, most experienced Java architects rely on ResourceBundles to store the various text that is needed for different languages, problem is that editing these files becomes problematic, especially when dealing with multi-byte character sets as are often used in Unicode (non Latin-1, aka ISO-8859-1) languages.
The best editor I’ve found for this case is, as you may have guessed, free for download.
Here’s the links:
Categories: WebStandards, Work eclipse, free, i18n, ide, java, jsp, l10n, plugin, rad, rbe, resourcebundle, unicode, utf-8, wsad
Occasionally, there comes a need to “look under the hood” of the code in a JAR file. While java is a compiled language, it isn’t quite machine code, but rather exists in a psuedo-code form to be used by the Java Virtual Machine’s JIT (Just in Time) compiler.
A lot can be learned from looking at other source code, unfortunately when using decompiled code you don’t get the original variable names or javadoc, but you can often better understand the API’s and performance issues in particular code.
I’m personally fond of DJ Decompiler, but I list several here for your use:
In my “day job” I do lot’s of code reviews. I’m a big fan of Agile Programming and JUnits, recently I was introduced to the world of code coverage tools available (for free!) to Java developers.
IMHO, here’s the three front-runners.
Personally I prefer the Eclipse integration provided by ECLEMMA, but I agree that no one tool is ever ‘best’ for all scenarios.
Some background on this topic if you are interested in learning more:
I recently found out about ’static analysis’ of Java code. I’ve found two of these tools that are both free and easy to use. Both provide review of java bytecode and look for common development errors and inefficiencies…
FindBugs is based on the concept of bug patterns. A bug pattern is a code idiom that is often an error. Bug patterns arise for a variety of reasons:
- Difficult language features
- Misunderstood API methods
- Misunderstood invariants when code is modified during maintenance
- Garden variety mistakes: typos, use of the wrong boolean operator
PMD scans Java source code and looks for potential problems like:
- Possible bugs – empty try/catch/finally/switch statements
- Dead code – unused local variables, parameters and private methods
- Suboptimal code – wasteful String/StringBuffer usage
- Overcomplicated expressions – unnecessary if statements, for loops that could be while loops
- Duplicate code – copied/pasted code means copied/pasted bugs
Both integrate easily within Eclipse based (and other IDE’s) is typically done with the use of a simple plugin.
FindBugs can also run as a Java WebStart (JNLP) application, however a different UI is shown for JRE 1.4 vs. 1.5 and above (look out!).
While no tool can identify all problems, these will help you find some troublesome problems and give you areas to take a deeper look at.
Happy reviewing and fixing.