Updata javadoc link.


git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1604622 13f79535-47bb-0310-9956-ffa450edef68
Revert: Updata javadoc link.


git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1604623 13f79535-47bb-0310-9956-ffa450edef68
Use AtomicBoolean instead of synchronization.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1604625 13f79535-47bb-0310-9956-ffa450edef68
Use Closer methods.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1604630 13f79535-47bb-0310-9956-ffa450edef68
Use Closer methods.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1604632 13f79535-47bb-0310-9956-ffa450edef68