|
log4j |
JSR 47 API |
| Availability |
since early 1999 |
scheduled for 2Q 2001 |
| Required JDK |
1.1 or above |
1.4 or above |
| Authorship |
actual users |
closed committee |
| License |
Apache Public License |
Sun Community Source License |
Logger
configuration order |
order independent |
order independent
(as of spec. version 0.75) |
| Support for API extensions |
pervasive |
none |
| Appender inheritance |
cumulative |
cumulative (as of spec. version 0.75) |
| Support for object rendering |
yes |
no |
| Configuration file formats |
XML and key=value formats |
key=value format only with very limited syntax |
| Support for ErrorHandlers |
yes |
yes (as of version 0.75) |
| Filter logic |
à la Linux ipchains |
boolean |
| Part of JDK |
no |
yes |