java.util.logging

I've got a simple setup to log a message: JDK 8 Update 65 and Eclipse Mars import java.util.logging.Logger; public class Example { private final static Logger LOGGER = Logger.getLogger(Example.class.getName()); public static void main(String[] args) { LOGGER.info("Test"); } } I would expect to get an output on the stdout , just like using System.out.println(); . But instead it gets printed out on the stderr , which results in a red font on the eclipse console: I know that I can change this behavior by writing a custom Handler , but I wish to know why the default output appears on the stderr

I'm having trouble finding my log files. I'm using Java Logging - java.util.logging - in Eclipse 3.7.1 on Windows XP. The relevant lines of my logging.properties file are: handlers= java.util.logging.FileHandler, java.util.logging.ConsoleHandler .level=INFO 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 As far as I can figure out, after I execute these two lines: Logger logger = Logger.getLogger("test"); logger.logp(Level.INFO,

I'm trying to load a custom log.properties file when my application is started. My properties file is in the same package as my main class, so I assumed that the -Djava.util.logging.config.file=log.properties command line parameter should get the properties file loaded. But the properties are only loaded when i specify a full absolute path to the properties file. Any suggestions how to use a relative path? Java logging doesn't search your whole hard disk for a file; there are very simple rules how files are looked up. You want Java to see that the two files belong to each other but you didn't

How do logging levels from java.util.logging map to SLF4J? SLF4J trace debug info warn error fatal java.util.logging finest finer fine config info warning severe jmehrens From the SLF4JBridgeHandler docs: FINEST -> TRACE FINER -> DEBUG FINE -> DEBUG CONFIG -> INFO INFO -> INFO WARNING -> WARN SEVERE -> ERROR 来源： https://stackoverflow.com/questions/20795373/how-to-map-levels-of-java-util-logging-and-slf4j-logger

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$tM:%1$tS %4$s %2$s %5$s%6$s%n' I also tried System.setProperty, but it still doesn't work, what am i doing wrong? import java.util.*; import java.util.logging.Logger; import java.util.logging.SimpleFormatter; import java.io.*; import java.awt.*; public class LoggerFormat { private static final Logger logger = Logger.getLogger(LoggerFormat.class.getName()); public static void main(String[] args) { System.setProperty("java.util.logging

I have an application which uses JDK Logging with a logging.properties file which configures a number of older log-file via java.util.logging.FileHandler.count. At certain points in the application I would like to trigger a manual rollover of the logfile to have a new logfile started, e.g. before a scheduled activity starts. Is this possible with JDK Logging? In Log4j I am using the following, however in this case I would like to use JDK Logging! Logger logger = Logger.getRootLogger(); Enumeration<Object> appenders = logger.getAllAppenders(); while(appenders.hasMoreElements()) { Object obj =