在Try{}
catch(Exception ex){
Logger.getLogger(类名称.class.getName()).log(Level.SEVERE, null, ex);}
语句块中，用JDK 自带的日志框架 java.util.logging包，只写了上面这一句话，那么它对应的Handler，format，Filter，Level这些信息在哪里。
catch(Exception ex){
Logger.getLogger(类名称.class.getName()).log(Level.SEVERE, null, ex);}
语句块中，用JDK 自带的日志框架 java.util.logging包，只写了上面这一句话，那么它对应的Handler，format，Filter，Level这些信息在哪里。
############################################################
# Default Logging Configuration File
#
# You can use a different file by specifying a filename
# with the java.util.logging.config.file system property.
# For example java -Djava.util.logging.config.file=myfile
########################################################################################################################
# Global properties
############################################################# "handlers" specifies a comma separated list of log Handler
# classes. These handlers will be installed during VM startup.
# Note that these classes must be on the system classpath.
# By default we only configure a ConsoleHandler, which will only
# show messages at the INFO and above levels.
handlers= java.util.logging.ConsoleHandler# To also add the FileHandler, use the following line instead.
#handlers= java.util.logging.FileHandler, java.util.logging.ConsoleHandler# Default global logging level.
# This specifies which kinds of events are logged across
# all loggers. For any given facility this global level
# can be overriden by a facility specific level
# Note that the ConsoleHandler also has a separate level
# setting to limit messages printed to the console.
.level= INFO############################################################
# Handler specific properties.
# Describes specific configuration info for Handlers.
############################################################# default file output is in user's home directory.
java.util.logging.FileHandler.pattern = %h/java%u.log
java.util.logging.FileHandler.limit = 50000
java.util.logging.FileHandler.count = 1
java.util.logging.FileHandler.formatter = java.util.logging.XMLFormatter# Limit the message that are printed on the console to INFO and above.
java.util.logging.ConsoleHandler.level = INFO
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter# Example to customize the SimpleFormatter output format
# to print one-line log message like this:
# <level>: <log message> [<date/time>]
#
# java.util.logging.SimpleFormatter.format=%4$s: %5$s [%1$tc]%n############################################################
# Facility specific properties.
# Provides extra control for each logger.
############################################################# For example, set the com.xyz.foo logger to only log SEVERE
# messages:
com.xyz.foo.level = SEVERE