Log4j, appender and InstantiationException
Hi,
I have written my own appender in an Eclipse project that uses log4j. When I try to use the appender I get the following exception:
log4j:ERROR Could not instantiateclass [test.appender.NewFileAppender].
java.lang.InstantiationException: test.appender.NewFileAppender
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:329)
at org.apache.log4j.helpers.OptionConverter.instantiateByKey(OptionConverter.java:120)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:629)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:533)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:417)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:316)
at org.apache.log4j.PropertyWatchdog.doOnChange(PropertyConfigurator.java:682)
at org.apache.log4j.helpers.FileWatchdog.checkAndConfigure(FileWatchdog.java:88)
at org.apache.log4j.helpers.FileWatchdog.<init>(FileWatchdog.java:57)
at org.apache.log4j.PropertyWatchdog.<init>(PropertyConfigurator.java:674)
at org.apache.log4j.PropertyConfigurator.configureAndWatch(PropertyConfigurator.java:382)
at se.micronic.argos.main.Main.initLogging(Main.java:305)
at se.micronic.argos.main.Main.<init>(Main.java:272)
at se.micronic.argos.main.Main.main(Main.java:1339)
log4j:ERROR Could not instantiate appender named"argos".
My property file looks like this:
log4j.appender.argos=test.appender.NewFileAppender
log4j.appender.argos.file=logs/MArgos.log
The other appenders in the property file work fine.
Any ideas?
Thanks
Markus
