Appending TimeStamp in log file name of Java util logger

Question

Currently I am using using Java util for logging logs into the file which can be configured from java.util.logging.FileHandler.pattern. I want to append a timestamp in the log file name. I also have to take the log file path from java.util.logging.FileHandler.pattern property.

Answer 1

may this example will helps you.

String timeStamp = new SimpleDateFormat().format( new Date() );
FileHandler fh = new FileHandler("./jay_log_%u.%g_" +timeStamp +".log", 30000,4);  
logger.addHandler(fh);

Answer 2

You can reuse the FileHandler from Tomcat, it timestamps the filename and rolls it every day:

http://tomcat.apache.org/tomcat-6.0-doc/api/org/apache/juli/FileHandler.html

https://github.com/apache/tomcat/blob/7.0.x/java/org/apache/juli/FileHandler.java