It looks like RollingFileAppender.Builder and RollingFileAppender.newBuilder() were added for 2.7.
Gary On Tue, Jan 16, 2018 at 1:31 PM, Mike Wertheim <mike.werth...@gmail.com> wrote: > I'm working on a system that is composed of over a hundred microservices, > and many of them are on various older versions of log4j2. > > There is an in-house library that many of the microservices share, and the > library has some logging configuration code, so I'm trying to figure out > the relationship between that library and the various versions of log4j2. > > > On Jan 16, 2018 12:16 PM, "Gary Gregory" <garydgreg...@gmail.com> wrote: > > > In general, you should be using the current version 2.10.0. Any reason > you > > are digging deep into old versions? > > > > Also, I've not been very strict about using @since in log4j-core. In > > log4j-api, we are very careful to do it all "right."" > > > > Gary > > > > On Tue, Jan 16, 2018 at 12:41 PM, Mike Wertheim <mike.werth...@gmail.com > > > > wrote: > > > > > https://logging.apache.org/log4j/2.x/log4j-core/apidocs/ > > > org/apache/logging/log4j/core/appender/RollingFileAppender.html > > > describes a method called "newBuilder". This method doesn't have a > > "since" > > > version, so I would assume that it's supported in all log4j2 versions. > > > > > > However, the expression RollingFileAppender.newBuilder() compiles fine > > > with > > > version 2.7, but I get "error: cannot find symbol" when I try to > compile > > it > > > with version 2.6. > > > > > > Similarly.... According to > > > https://logging.apache.org/log4j/2.x/log4j-core/apidocs/ > > > org/apache/logging/log4j/core/appender/RollingFileAppender. > Builder.html, > > > it seems that the 'setConfiguration' method should be available in all > > 2.x > > > versions of log4j2. > > > > > > However, the expression > > > RollingFileAppender.newBuilder().setConfiguration(config).build() > > compiles > > > fine with version 2.10.0, but I get "error: cannot find symbol" when I > > try > > > to compile it with version 2.7. > > > > > > In both cases, it seems like the javadoc says that a method exists in > all > > > 2.x log4j2 versions, but that doesn't seem to be the case. Are these > > > methods only available in a subset of log4j2 versions? Is the javadoc > > > missing the "since version" information for these methods? > > > > > >
