Log4j2

Log4j2 ConsoleAppender Example

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Log4j2 ConsoleAppender appends the log events generated by application into the System.out or System.err. The default target is System.err. Console appender uses the log message …

Log4j2 RollingFileAppender

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Log4j2 RollingFileAppender is an OutputStreamAppender that writes log messages to files, following a configured triggering policy about when a rollover (backup) should occur.

Log4j2 LevelRangeFilter Example

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Learn to use log4j LevelRangeFilter filter which returns the onMatch result if the level in the LogEvent is in the range of the configured min …

Log4j2 Multiple Appenders Example

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Given log4j2.xml is reference to configure multiple appenders such as console appender and file appenders. This also configure the dynamic log root path. Log4j2 Multiple …

Log4j2 HTMLLayout Configuration Example

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This Log4j2 example will help you in configuring log4j2.xml file with HTMLLayout. The HTMLLayout generates an HTML page and adds each log statement to a row in a table.

Log4j2 ThreadContext – Fish Tagging

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Log4j2 ThreadContext allows you to fish tag the log statements with multiple unique tags to analyze logs while diagnose a problem in runtime.

Log4j2 – Useful Conversion Patterns

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Given log4j2 conversion patterns are for reference so that you and me don’t waste time to build these patterns everytime we are creating/editing log4j configuration files.

Configure Log4j2 for JUnit Tests

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Learn some recommended ways to configure Log4j2 – specific to junit testcases and different from used in production.

Log4j2 JSON Configuration Example

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Apache Log4j 2 is an upgrade to Log4j 1.x that provides significant improvements over its predecessor such as performance improvement, automatic reloading of modified configuration …

Log4j2 Properties File Example

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Log4j2 properties tutorial. Learn to configure log4j2.properties file to output to console, rolling files etc. Learn log4j2 appenders, levels and patterns.

Log4j2 XML Configuration Example

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Apache Log4j2 is an upgrade to Log4j 1.x that provides significant improvements over its predecessor such as performance improvement, automatic reloading of modified configuration files, …

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