Our integration tests have been taking a long time for ages. They start up tomcat, and then make a load of web requests to it. When I say a load, it's more like 60 because people have been loath to add new tests as running them is so slow. Each new test takes 3 seconds, which sounds a lot.

( Why is it so slow? )

For some parts of our app, we use Quartz CronTrigger objects.

To specify when a task will run you give it a string telling it when to run. This string looks a bit like a crontab(5) entry. You think "That sounds like a good idea, it means that I don't need to learn a new way to specify these things. Now, look again at the CronTrigger documentation ( Read more... )

When using perl to match strings, you would quite often do something like:

if ($message =~ /value/) { print $message }

In java regular expressions such as used by String.matches have to match the whole string, so you would do

if (message.matches(".*value.*")) { System.out.println(message) }

Now, what happens if you do

if ("foo\nsome value ( Read more... )

Consider the following program. It performs magic, by converting an Integer into a String. Obviously this doesn't work, but what actually happens?

1. class gen {
2. Object obj;
3. public gen(Object s) {
4. obj = s;
5. }
6. T test() {
7. return (T) obj;
8. }
9. }
10.
11. public class test {
12. ( Read more... )