java.util.logging

I am seeking confirmations on followings: Using Websphere Application Server Admin Console, we can specify some logging configurations and that shows classes of your application also (as shown below). If I enable logging in WAS console, will it work only if My Application (and other classes which are mentioned in there) have JUL implemented into it? By default the logging using WAS console is done in the trace file (${SERVER_LOG_ROOT}/trace.log). Can this be made to console also? (I think yes, just be changing it to ${SERVER_LOG_ROOT}/SystemOut.log) Is there any way to configure Log4j

Normally in applications (Take web application for example) we have a single instance of the logger created during the startup. It can even be a singleton and it doesn't matter. The important thing is there is 1 instance for the whole application. We use java.util.logger Now image you have two requests from two different users which throw an exception and we are logging those which get written to the log file. Is the write in these two different requests to the log file synchronized in someway? Or do we need to explicitly synchronize them cause I found in rare cases we got logs which are all

I need to redirect Jersey request/response log to my log4j2. I have Jersey logging enabled by using this code on my ApplicationJAXRS extends Application : @Override public Set<Class<?>> getClasses() { return new HashSet<Class<?>>() {{ add(LoggingFilter.class); }}; } It seems that Jersey uses JUL (Java Logging) internally and the default output is STDOUT. At this moment I can see the STDOUT on Eclipse Console. The Log4j2 documentation have a section about JDK Logging Adapter . It says To use the JDK Logging Adapter, you must set the system property java.util.logging.manager to org.apache

I am creating a logger in java by executing the following code: private static final String logFile = "." + File.separator + "Log Files" + File.separator + "Log_" + Long.toString(System.currentTimeMillis()); private static Logger logger = Logger.getLogger("JCS_Logger"); static { try { logger.addHandler(new FileHandler(logFile )); } catch (Exception e) { System.err.println("Could not return a static logger"); } } If I use this logger, it writes to not only System.err, but also to the file. Ultimately I want to configure the logger to allow it to write to:' Both System.err and File Neither

I am trying to implement an application level logger (webapps deployed in weblogic) - using java.util.logging . I took the ClassLoaderLogManager from apache JULI logging system since it already implements application level logging. So this is how my servlet code ( SimpleServlet .java) looks like : ClassLoaderLogManager ClassLoaderLogManager = new ClassLoaderLogManager () ; String nameoflogger = SimpleServlet.class.getName() ; boolean status = ClassLoaderLogManager .addLogger(nameoflogger); if(status) { Logger logger = ClassLoaderLogManager .getLogger(nameoflogger); logger.log(Level.FINEST,

I'm trying to use a logger across a web application. I have added the FileHandler to write the log into file. Now, I need to use the same handler across other classes/servlets in the project, so that logs from all classes are written to same text file. How can I achieve this? /*** * Initialize a logger */ public static Logger logger; static { try { FileHandler fh = new FileHandler("log.txt", true); fh.setFormatter(new SimpleFormatter()); logger = Logger.getLogger(MyClass.class.getName()); logger.addHandler(fh); } catch (IOException e) { e.printStackTrace(); } } Do I need to initialize the

My Project is composed of multiple modules. Each module can run on its own and have a separate log4j2.xml Say Project X is composed of three modules: Module A has log4j2.xml (contains Loggers and Appenders) Module B has log4j2.xml Module C has log4j2.xml While integrating the modules, I have to manually copy-paste the Loggers and Appenders from each module's log4j2.xml into the project specific log4j2.xml file. To avoid copy-paste, I've looked for XInclude to include multiple files but it supports only when Appenders and Loggers are in different file. http://logging.apache.org/log4j/2.x/manual

According to the Spring Boot documentation, it is possible to set the logging level of multiple logging framework (jul, slf4j, etc.) just by using the Spring Boot Logging Starter and setting appropriate logging.level in application properties. Everything works fine except that the library I use is logging with jul and log level Level.FINER. However, Level.INFO is properly logged. I set level in application.properties to: logging.level.=TRACE which should log everything according to SLF4JBridgeHandler . Am I something missing or is it a problem of logback (used by the starter) rather my