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Why do Java webapps use .do extension? Where did it come from?
I have always wondered why so many Java developers use ".do" as the extension for their web controller (MVC) resources. Example: http://example.com/register.do
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Why does the JVM still not support tail-call optimization?
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Diagnosing Java Code: Improving the Performance of Your Java Code (alt) explains why the JVM does not support tail-call optimization.
But although it is well known how to automatically transform a tail-recursive function into a sim...
Apache Tomcat Not Showing in Eclipse Server Runtime Environments
...epler - http://download.ecliplse.org/releases/kepler
Expand "Web, XML, and Java EE Development"
Check JST Server Adapters (version 3.2.2)
After that I could define new Server Runtime Environments.
EDIT: With Eclipse 3.7 Indigo Classic, Eclipse Kepler and Luna, the steps are the same (with appropr...
What's the difference between passing by reference vs. passing by value?
...s are "value types" and others are "reference types" -- among them are C#, Java, and JavaScript.
4There's nothing bad with recycling a fitting old term per se, but one has to somehow make it clear which meaning is used each time. Not doing that is exactly what keeps causing confusion.
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Java ResultSet how to check if there are any results
... "forward only".
Compare the two throw sections:
http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#isBeforeFirst()
http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#first()
Okay, basically this means that you should use "isBeforeFirst" as long as you have a "forward...
When to use LinkedList over ArrayList in Java?
...ng a position in the list takes time proportional to the size of the list. Javadoc says "operations that index into the list will traverse the list from the beginning or the end, whichever is closer", so those methods are O(n) (n/4 steps) on average, though O(1) for index = 0.
ArrayList<E>, o...
Maven dependency for Servlet 3.0 API?
...but never mind...
Brabster separate dependencies have been replaced by Java EE 6 Profiles. Is there a source that confirms this assumption?
The maven repository from Java.net indeed offers the following artifact for the WebProfile:
<repositories>
<repository>
<id>java....
How do shift operators work in Java? [duplicate]
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Java defines shift to mask (wrap around) the count down to the 0-31 range, rather than saturate to 32 (if shift by 32 left only zeroes). (using 32bit types for example, obviously.) I assume this decision was made to match t...
What is
... type has to implement comparable of itself or its superclass. So consider java.util.Date. It implements Comparable<Date>. But what about java.sql.Date? It implements Comparable<java.util.Date> as well.
Without the super signature, SortedList would not be able accept the type of java.sq...
Ant: How to execute a command for each file in directory?
...t dir="${server.src}" casesensitive="yes">
<include name="**/*.java"/>
<exclude name="**/*Test*"/>
</fileset>
</foreach>
</target>
<target name="bar">
<echo message="${theFile}"/>
</target>
This will antcall the target "bar" w...