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It is possible to enable logging at runtime without modifying the application binary. The log4j package is designed so that log statements can remain in shipped code without incurring a high performance cost.
One of the distinctive features of log4j is the notion of hierarchical loggers. Using loggers it is possible to selectively control which log statements are output at arbitrary granularity.
Log4j can output to: a file, a rolling file, a database with a JDBC driver, many ouput asynchronously, a JMS Topic, a swing based logging console, the NT event log, /dev/null, a SMTP server (using javamail), a socket server, syslog, telnet daemon and stdout.
The format of the output can be defined using one of the various layout (or user defined layout) like: simple text, html, date, pattern defined and XML.
For more details, see <http://jakarta.apache.org/log4j>
jakarta-log4j1.2 for Debian ------------------------ This is the jakarta logging library version 1.2. If your package depends on it please use the /usr/share/java/log4j-1.2.jar symlink. Some information from the INSTALL documentation: You can now test your installation by first compiling the following simple program. import org.apache.log4j.Logger; import org.apache.log4j.BasicConfigur more»
jakarta-log4j1.2 (1.2.13-2) unstable; urgency=low * Added binary-arch build target (noop) (closes: #395615) -- Kalle Kivimaa <email@example.com> Sat, 28 Oct 2006 08:30:00 +0300 jakarta-log4j1.2 (1.2.13-1) unstable; urgency=low * New upstream release * kaffe compiler transition * Remove build dependencies on libcrimson-java, libjaxp1.2-java (not needed) * Build javadoc from source more»
[*] Changes that are 100% compatible with existing client code. [**] Changes that requiring little or no modification to existing client code. [***] Changes requiring important modifications to existing client code. December 4th, 2005 - Release of version 1.2.13 - Fixed bug 36800. Location related info now emitted for TRACE level log messages. [*] - Fixed bug 3 more»
This package was debianized by Benoit Joly <firstname.lastname@example.org> on Sat Apr 12 2003 18:32:20 -0400. I more»