Why do you think it does not log DEBUG messages? If you mean that your log.debug(String) logging calls do not end up in java.util.logging log files, then I guess you have to configure the logging.properties configuration file to allow log messages at FINE level. If you do not want to mess with the global %JRE_HOME%/lib/logging.properties, … Read more
As Tomcat internally uses JUL to log , you can use the system property java.util.logging.config.file to specify the file path of the properties file. For the format of this properties file , you can refer to your JRE_HOME/lib/logging.properties (which is the default configuration file used by JUL) However, JUL does not support the daily rotation … Read more
Where is your logging.properties file located? It should be available in the root of the classpath. As a sanity check, what does the following code print? System.out.println(getClass().getClassLoader().getResource(“logging.properties”)); If the code is in a static context, use System.out.println(ClassName.class.getClassLoader().getResource(“logging.properties”));
The severe method is only used to log severe messages without associated throwable information. If you need to log throwable information then you should use the log method instead: try { data = new GameData.Builder().enemy(enemy).build(); log.fine(“new data object\t\t” + data.getEnemy()); setChanged(); notifyObservers(data); } catch (NullPointerException npe) { log.log(Level.SEVERE, npe.getMessage(), npe); }
I assume you need the log format in the below format FINE,Message1,object.GetValue(),Message2,1,Message3,2 You need to create an output message format logger.log(Level.INFO, “{0},{1},{2},{3},{4},{5}”,new Object[]{Message1,object.getValue(),Message2,1,Message3,2}); Now you need to create a custom formatter which by extending Formatter class public class DataFormatter extends Formatter { @Override public synchronized String format(LogRecord record) { String formattedMessage = formatMessage(record); String throwable … Read more
From the SLF4JBridgeHandler docs and testing (annotated with brackets): [ALL -> TRACE] FINEST -> TRACE FINER -> DEBUG FINE -> DEBUG [CONFIG -> INFO] INFO -> INFO WARNING -> WARN SEVERE -> ERROR [OFF -> ERROR]
Where do I see the log? In a log file or standard output, depending on your actual log handler configuration. This can be set via a property file or directly via the logging API. Does this mean that if I have 3 request level log… SEVERE is the most important (highest priority) and FINE is … Read more
See this short introduction to log4j. The issue is in using System.out to print debugging or diagnostic information. It is a bad practice because you cannot easily change log levels, turn it off, customize it, etc. However if you are legitimately using System.out to print information to the user, then you can ignore this warning.
You need to understand that void is actually nothingness. You cannot convert what is nothing. You might end up printing void as a string, but (trust me), you don’t want that. I think what you are looking for is // assuming ex is your Exception object logger.error(ex.getMessage(), ex); // OR Logger.log(errorLogLevel, ex.getMessage(), ex) This will … Read more
You need to call SLF4JBridgeHandler.install(). You also need to enable all log levels at the root logger (reason in excerpt below) in java.util.logging and remove the default console appender. This handler will redirect jul logging to SLF4J. However, only logs enabled in j.u.l. will be redirected. For example, if a log statement invoking a j.u.l. … Read more