Jun
26
26
You can put the following lines in your wordpress theme into footer.php to see how much SQL statements were executed for generating the page and how long the whole process of generating the page took:
Jun
26
26
Recently I visited Jazoon, an international conference for Java developers at Zurich, Switzerland.
Having heard a lot of interesting talks, I want to sum up my impressions and try to figure out some of the latest trends in the world of Java as well as interesting facts for software architects.
This is part 3 of my series of blog posts and deals with
Ajax Push
Having worked with ICEfaces (but suspended work for now due to a lot of bugs), I was curious to hear a talk of one of the guys of ICEfaces, Ted Goddard.
The topic was Ajax Push. Surely, Ajax is a buzzword of today and everybody wants to have some Ajax functionality in his application, maybe just to be cool.
Jun
26
26
Recently I visited Jazoon, an international conference for Java developers at Zurich, Switzerland.
Having heard a lot of interesting talks, I want to sum up my impressions and try to figure out some of the latest trends in the world of Java as well as interesting facts for software architects.
This is part 2 of my series of blog posts and deals with
Google Web Toolkit
I visited two talks about the GWT.
As you probably know, Google Web Toolkit follows the idea that the presentation layer of a web application can be entirely written in plain Java.
Mainly, the GWT is a compiler that compiles your Java code into highly optimized JavaScript, that is executed on the client side.
Jun
26
26
Recently I visited Jazoon, an international conference for Java developers at Zurich, Switzerland.
Having heard a lot of interesting talks, I want to sum up my impressions and try to figure out some of the latest trends in the world of Java as well as interesting facts for software architects.
This is part 1 of my series of blog posts and deals with
Scala
This keynote was presented by Martin Odersky, a professor at EPFL in Lausanne, Switzerland. Maybe you have already heard of him. He is about to develop a programming language that could be the successor of Java: Scala.
Jun
24
24
I’m really disappointed about how stupid web forms are sometimes. Consider this:
- A captcha that has as a side-note: “Please do not enter whitespace characters“.
- Why can’t the website just filter the whitespace?
- A edit field for a URL that has as a side-note: “Please also enter the http://“.
- Why can’t the website just add the http:// when it is missing?!
- A submit button with side-note “Please hit submit only once“.
- Most websites don’t have this anymore, they disable the Submit button with Javascript. Thank you
- Most websites don’t have this anymore, they disable the Submit button with Javascript. Thank you
- A edit field for a phone number that insists on a specific number format.
- Does the number format matter in any way except for the +Countrycode at the beginning? Why not just filter everything except numbers?
All of these mentioned are even happening on very big sites who should have the people who know better. Are there any reasons except annoying me?
Does anyone have more examples? Please comment
(Translated from the blog of guruz)
Update: Blogoscoped has another posting about forms in websites.
Jun
23
23
Recently I inserted about 200 rows into a MySQL table using Hibernate.
However, my application had an error because of missing data and I explored the database in order to find the problem.
In general, SQuirreL is a good tool to do this and I like using it, but this time it made me crazy.
Jun
22
22
There are some cases where you want a text field to automatically scroll down, e.g. for a log window. The following code snippet will make the JTextArea (embedded in a JScrollPane) scroll down automatically when the scroll position is at the bottom before adding the text:
Jun
21
21
Lately, I have started becoming more and more interested in job interviews. Part of that might be because I’m in the finishing run of my diploma thesis, and so I’ll likely start my first real job the next months.
NOOP.NL has an article on the perfect job interview question. A question that can single-handedly decide the fate of an interviewee (at least at the linked shop ;)).
The question: When reviewing somebody else’s code, what is it that you usually find most disturbing?
Some people will rant about a programming style guide, but few will mention the architecture.
I found the reasoning behind it all the more interesting. The thing is, while architecture is obviously a pet field I love to be in, I think I wouldn’t have given it as answer to the “perfect question”: In most situations, you can’t even determine the system architecture from just looking at one person’s code.
Maybe the question is just short on details. The question is interesting, the answer to why it is important is kinda non-negotiable, but the process of weeding people out solely because of their answer to this is… well… questionable.
Jun
20
20
Most applications need to use timers to do things every few seconds. They are needed for maintenance work, network keep alive or other reasons. In most cases, they don’t need to be very exact.
I’m wondering why they are not synchronized on the OS-level: All applications do their maintenance work directly after each other and then the CPU is allowed to go to a state with lower power consumption. The current case is probably that it can’t even go low-power because all applications have their timers fired at arbitrary times.
Does anyone know about such possibilities in the major operation systems?
Jun
19
19
This HowTo describes a way to integrate Seam, Spring and jBPM in order to use the same Hibernate SessionFactory in both Spring and jBPM (and of course, Seam).
At first, make sure you use the latest version 2.1.0 of Seam since you could get trouble with 2.0.1 and SpringTransactions.
The relevant parts of the configuration are: