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Tagged debugging

Some ways to log stuff in java

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Logging in java is a mess. For a long time there was no standard way of logging in java, so there is a lot of 3:rd party solutions. Apache commons logging, slf4j, and log4j are probably the most used.

By now, there is standard java.util.logging package, but most people stick to the old 3:rd party solutions. As we shall see, that isn't really surprising, since java util logging kind of sucks.

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When developing code with Hibernate (or other Java tools that create SQL statements for you) it is often a good idea to take a close look at the generated SQL code, for example if you have performerance issues.

A very nice and simple way to do that is logdriver by Ryan Bloom. (Update 2017-06-24: Unfortunatley, the domain seems to have been lost to a spam site).

And it's simple to use! I've got a .properties file where I've commented out the ordinary db driver and use logdriver instead. As simple as this:

# DB_DRIVER=oracle.jdbc.driver.OracleDriver
# DB_URL=jdbc:oracle:thin:@dbhost.mydomain:1523:db

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