Blog / Java

How to print the values of all the fields of an object in Java

August 17, 2011

I was just doing some Java coding and I needed to check the values of a bunch of fields of an object (mostly numbers). Normally I’d just call and print each get() method if I just need to check a few fields, but the class I’m dealing with has over 30 fields and I need to check them all and there’s no way I’m doing over 30 print statements for each ...

GWT, Django, and JSON (with padding)

August 8, 2011

A couple of months ago I was working on a project where I needed to retrieve data in JSON format from a web service written in Python (using the Django web framework) under GWT. The data is then loaded into GXT/Ext GWT grids and charts.

After looking at a GXT example of loading JSON data to a grid, I thought this would be pretty straightforward, but of course I was wrong. Since the Django ...

How to log to multiple log files with log4j

March 6, 2011

Back to Java coding!

We have a Java application that calls an external application and since it gets called quite often we figured we should probably log its standard output and standard error streams to a separate log file so we could easily locate issues with it later. This would also allow us to create a different message format for it and different handlers.

Luckily, it turned out that this is pretty easy to do ...