How do i modify a log format with Simple Formatter?

Question

I\'ve tried adding this line into logging.properties, but the output doesn\'t change

java.util.logging.SimpleFormatter.format=\'%1$tY-%1$tm-%1$td %1$tH:%1$tM:%

Answer 1

https://logging.apache.org/log4j/2.0/manual/messages.html refer this. have very good expanation