Category Archives: Coding

Script to build a Java classpath

Posted on May 13, 2008 by James Murty

If you need to compile or run Java programs from the command line, it can be a real hassle to identify all the jar libraries the program requires and include them in your classpath. Here is a short script that … Continue reading →

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S3 Copy Object feature is now available in beta

Posted on May 6, 2008 by James Murty

Amazon has announced beta support for the Copy Object operation in S3. This feature was pre-announced in March. The copy functionality allows you to copy objects within or between your S3 buckets, and optionally to replace the metadata associated with … Continue reading →

Posted in AWS, Coding, JetS3t | 4 Comments

Browser Uploads to S3 using HTML POST Forms

Posted on May 1, 2008 by James Murty

I have added an article about the S3 service’s POST upload feature to the AWS resources site: Browser Uploads to S3 using HTML POST Forms. The article describes how to create HTML POST forms that allow your web site visitors … Continue reading →

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Programming Amazon EC2 Version 2008-02-01

Posted on April 29, 2008 by James Murty

Amazon has released an updated version of the Elastic Compute Cloud (EC2) API with the version name 2008-02-01 . This release includes a number of new features that were not available in the 2007-08-29 version of the API that I … Continue reading →

Posted in AWS, Coding, O'Reilly Book | Leave a comment

Ruby on Rails: errors when launching threads from a controller

Posted on March 19, 2008 by James Murty

While writing a proof-of-concept Ruby on Rails application (Ruby 1.8.6, Rails 2.0.2) I was stumped by an intermittent problem where long-lived processes would fail with the error message: <ArgumentError: A copy of TransactionController has been removed from the module tree … Continue reading →

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Shell script to find a class in a set of Jar files

Posted on February 19, 2008 by James Murty

When you work on a Java project with many library dependencies it can be difficult to know which Jar files contain which classes. Hunting down a particular class in a tangled mess of Jar files can be painful, especially if … Continue reading →

Posted in Coding | 2 Comments