CODEWITHSUNDEEP
javajava.util.logging
Anonymous Coward
Anonymous Coward

Reputation: 499

Where is my log file?

I'm having trouble finding my physical log files. I'm using the java.util.logging classes. I have a trivial sandbox class containing the following code:

package test;

import java.util.logging.Level;
import java.util.logging.Logger;

public class TestLogging {

public static void main(String[] args) {

@SuppressWarnings("unused")
TestLogging test = new TestLogging();   
}

public TestLogging() {

System.out.println(getClass().getClassLoader().getResource("logging.properties")); 

Logger logger = Logger.getLogger("test"); 
logger.logp(Level.CONFIG, "myClass", "myMethod", "Monday"); 
logger.logp(Level.FINE, "myClass", "myMethod", "Tuesday"); 
logger.logp(Level.FINER, "myClass", "myMethod", "Wednesday"); 
logger.logp(Level.FINEST, "myClass", "myMethod", "Thursday"); 
logger.logp(Level.INFO, "myClass", "myMethod", "Friday"); 
logger.logp(Level.SEVERE, "myClass", "myMethod", "Saturday"); 
logger.logp(Level.WARNING, "myClass", "myMethod", "Sunday");      
}
}

My logging.properties file (again, stripped of comments) is:

handlers= java.util.logging.FileHandler, java.util.logging.ConsoleHandler
.level= ALL
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
java.util.logging.ConsoleHandler.level = INFO
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
x.y.level = SEVERE
x.y.z.level = WARNING
org.sscce.level = WARNING
org.sscce.baz3.level = INFO

The logging.properties file is in the classpath under User Entries in the Run Configuration for this class.

When I execute the class, I get this on the console:

file:/C:/Program%20Files/Java/jdk1.6.0_18/jre/lib/logging.properties
28-Feb-2012 2:05:55 PM myClass myMethod
INFO: Friday
28-Feb-2012 2:05:56 PM myClass myMethod
SEVERE: Saturday
28-Feb-2012 2:05:56 PM myClass myMethod
WARNING: Sunday

I asked for the logging level on the console to be INFO and that's all I have on the console so that part seems to be working. But when I look for my physical java logs in %h, which is C:\Documents and Settings[My Windows ID], there are no files that follow the pattern javaX.log where X is an integer.

What am I doing wrong? Is the program not seeing the logging.properties file? Or are the values set in some way to prevent any physical log from being written?

I need some help in debugging this because I can't see anything obviously wrong. Any takers?

Upvotes: 2

Views: 13460

Answers (1)

user177800
user177800

Reputation:

To find your log files, you need to know that %h stands for the value in your user.home variable.

To get that, execute: System.out.println("%h: " + System.getProperty("user.home"));

You have to set which properties file you are using with a System.property as well. Here is one way to do it, otherwise it uses a default that isn't where you probably think it is.

java -Djava.util.logging.config.file=mylogging.properties

You can also do it programmatically before you start using the logging classes.

also 

paths with spaces + Java == pain and suffering

and always use / as the path separator, Java will do the correct thing, even on Windows.

Upvotes: 2

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