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Questions tagged [java.util.logging]

Java package which provides the classes and interfaces of the Java 2 platform's core logging facilities.

The Java Logging APIs, introduced in package java.util.logging, facilitate software servicing and maintenance at customer sites by producing log reports suitable for analysis by end users, system administrators, field service engineers, and software development teams.

The Logging APIs capture information such as security failures, configuration errors, performance bottlenecks, and/or bugs in the application or platform.

The core package in Java includes support for delivering plain text or XML-formatted log records to memory, output streams, consoles, files, and sockets. In addition, the logging APIs are capable of interacting with logging services that already exist on the host operating system.

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Good examples using java.util.logging

I want to use logs in my program. I heard about java.util.logging, but I don't know how to begin. Are there any examples of what can I do with logging? How would I use logging in my own program?
Renato Dinhani
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Java Logging vs Log4J

Is it still worth to add the log4j library to a Java 5 project just to log let's say some exceptions to a file with some nice rollover settings. Or will the standard util.logging facility do the job as well? What do you think?
Okami
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Why are the Level.FINE logging messages not showing?

The JavaDocs for java.util.logging.Level state: The levels in descending order are: SEVERE (highest value) WARNING INFO CONFIG FINE FINER FINEST (lowest value) Source import java.util.logging.*; class LoggingLevelsBlunder { public static…
Andrew Thompson
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How can I disable the default console handler, while using the java logging API?

Hi I am trying to implement the java logging in my application. I want to use two handlers. A file handler and my own console handler. Both of my handlers work fine. My logging is send to a file and to the console . My logging is also sent to the…
loudiyimo
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JUL to SLF4J Bridge

I'm currently observing that a 3rd party library (namely restfb) is using java.util.logging and I'm seeing those logs end up in STDOUT even though I don't have an SLF4J console appender configured in my logback.xml. I also have the jul-to-slf4j…
Taylor Leese
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How do I log a stacktrace using java's Logger class

I am using Java's Logger class. I want to pass ex.printStackTrace() into Logger.log(loglevel, String), but printStackTrace() returns void. So I am not able to pass and print the stack trace of the exception. Is there any way that I can convert void…
Surya Joseph
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Logger vs. System.out.println

I'm using the PMD plugin for eclipse and it gives me an error when using System.out.println() with the explanation: System.(out|err).print is used, consider using a logger. My question is - What is a Logger? How is it used to print to the screen?…
Amir Rachum
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Where does java.util.logging.Logger store their log

I am a bit lost with java Logger private static Logger logger = Logger.getLogger("order.web.OrderManager"); logger.info("Removed order " + id + "."); Where do I see the log? Also this quote from java.util.logging.Logger library: On each logging…
Thang Pham
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How to map levels of java.util.logging and SLF4J logger?

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
shashantrika
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Logging with multiple parameters

I am currently working on a program wherein, I must write all output to a log file. I need to write a log method, that should give an output with a level, a message, an object value, another message, an integer value, another message and another…
Gash87
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Java Logging - where is my log file?

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,…
Anonymous Coward
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printStackTrace to java.util.logging.Logger

How do I print the entire stack trace using java.util.Logger? (without annoying Netbeans). The question should've originally specified staying within Java SE. Omitting that requirment was an error on my part. -do-compile: [mkdir] Created dir:…
Thufir
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How to set maximum number of rolls and maximum log size for tomcat?

I have problem with space so need limit size of catalina.out to 10M and limit number of rolls to 3 previous days. Is it possible with only configure logging.properties? Thanks.
user710818
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slf4j logging with jdk – how to enable debug?

By default slf4j, when using with jdk (slf4j-jdk14-1.6.1.jar), does not log debug messages. How do I enable them? I can’t find info neither in the official docs, the web or here on how to enable it. I found some info on (failed though) creating a…
Kissaki
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Load java.util.logging.config.file for default initialization

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…
abp
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