How to implement if-else logic

<c:choose>
<c:when test="${pageControl.adCategory == 'health'}">
 ...
</c:when>
<c:when test="${pageControl.adCategory == 'travel'}">
 ...
</c:when>
<c:when test="${pageControl.adCategory == 'science'}">
 ...
</c:when>
<c:otherwise>
 ...
</c:otherwise>
</c:choose>

How to handle checkboxes in forms in Spring

<input type="checkbox" name="wantsEmail" id="signup-checkbox" value="true" <c:if test="${signupCredentials.wantsEmail == true}">checked</c:if> >

I needed to include @RolesAllowed annotation into the project.
For that I’ve used the following IVY dependency:
<dependency org=”javax” name=”javaee-api” rev=”6.0″ conf=”compile->default”/>
This dependency basically provides interface to most of java ee components without implementation.
Hence, it is usually used to compile the project, because implementation is usually within the web container (eg. Tomcat).

However, the project used to fail with an error above whenever I ran ant test task.
Mock of HttpServletRequest object was failing. My guess is that reflection was trying to go deeper into actual implementation which dependency above does not provide.

It was even harder to spot, because IDE was running all tests just fine. Probably, because classes were loaded in a different order in IDE and in ANT.
JVM grabs whichever class is loaded first and ignores the next one, hence error did not show in IDE.
IDE was loading full implementation, while ANT was loading interface (dependency above) first.

Getting a smaller jar file that contains implementation of javax.annotation.security package helped solve the problem.
<dependency org=”javax.annotation” name=”jsr250-api” rev=”1.0″ conf=”compile->default”/>

Good times!

I couldn’t compare words such as Struts and Spring, because they are used very extensively in other contexts as well.

Hence, I used, as a common denominator, word JAVA. Which might under-estimate the frequency of such words as GWT, because it is not usually used together with “Java” word.  Nevertheless, we can see the trends, at least the growth rates.

java jsf, java spring, java struts, java gwt, java ejb

Things to notice:

– Spring is steady, and seems to be the most popular so far

– Struts is dying

– JSF started very well, but seems to be steady now (still not as popular as Struts though)

– GWT is not mainstream, but again it is hard to say anything for sure