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Category Archives: java

PowerDNS Makes Custom DNS Backends Easy

By carson | Published: September 14, 2008
I ran into PowerDNS recently when I needed to find a DNS server that would allow me to produce custom responses to domain queries. I needed to have a request for a DNS entry return a different IP depending on some factors in a database and I needed that data to always be accurate (not [...]
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Spiffing up JFreeChart charts

By carson | Published: June 18, 2008
I recently was given a copy of ChartFX for Java to evaluate as a charting solution for a Java project. After using it for a while it seemed nice despite having some odd ways of doing things that I think come from it originally being a C# and VB product. After playing with it for [...]
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Connection timeouts with the Apache commons TelnetClient

By carson | Published: July 24, 2007
I recently used the Apache commons net package in a project to create a small telnet client that automated a login process. It is hard to find a lot of documentation on TelnetClient but there are some examples. For what I wanted to use the telnet client for I ran into a problem because I [...]
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Using Java to get detailed DNS information

By carson | Published: November 19, 2006
Not long ago I was curious about using Java to look up DNS information so I decided to put together a little DNSBL/RBL checker so I could experiment with Java DNS lookups and some PHP/Java communications. There isn't a lot of Java DNS stuff out there but it was easy to tell that the tool [...]
Also posted in system administration, utilities | 3 Comments

Building firefox and mozilla tools on an AMD64

By carson | Published: July 21, 2006
Sometimes I curse the day I decided to get a 64 bit box. Everything is fine until I want to build something by hand or upgrade something and then if it doesn't just work it is like a maze of problems. Recently I was trying to build firefox from source along with XULRunner so that [...]
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Thread pooling with Java concurrency utilities new (java 1.5) and old (util.concurrent)

By carson | Published: April 24, 2006
Java Concurrency in Practice Threading in java is fairly easy and now with java 1.5 some of the stuff that was harder has become even easier. A few years ago someone pointed me to a site that had some concurrency utils that where the precursor to what are now the concurrent utils in java 1.5. They [...]
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JDBC + Batch updates + Non-Standard == Oracle

By carson | Published: February 11, 2006
I recently ran into an issue where doing a large number of inserts and updates in an Oracle 8i database was taking forever. I was already using a prepared statement and commiting only after a certain number of rows. After some digging I found out that there is a special Oracle way of doing batch [...]
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