[java] How to set up java logging using a properties file? (java.util.logging)

I have a stupid java logging problem: I'm loading the logging configuration from my app configuration file - but it just doesn't log anything after reading the file (which looks pretty much like the examples you will find on the net except for the additional application configuration - removing this also doesn't help). The "initializing..." log line appears just fine, but the "starting app" and any further messages are neither logged to the console, nor is the logfile ever created. What am I missing here?

The Logger code looks like this:

...
Logger log = Logger.getLogger("myApp");
log.setLevel(Level.ALL);
log.info("initializing - trying to load configuration file ...");

Properties preferences = new Properties();
try {
    FileInputStream configFile = new FileInputStream("/path/to/app.properties");
    preferences.load(configFile);
    LogManager.getLogManager().readConfiguration(configFile);
} catch (IOException ex)
{
    System.out.println("WARNING: Could not open configuration file");
    System.out.println("WARNING: Logging not configured (console output only)");
}
log.info("starting myApp");
...

And this is the configuration file:

appconfig1 = foo
appconfig2 = bar

# Logging
handlers = java.util.logging.FileHandler, java.util.logging.ConsoleHandler
.level = ALL

# File Logging
java.util.logging.FileHandler.pattern = %h/myApp.log
java.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.FileHandler.level = INFO

# Console Logging
java.util.logging.ConsoleHandler.level = ALL

Are you searching for the log file in the right path: %h/one%u.log

Here %h resolves to your home : In windows this defaults to : C:\Documents and Settings(user_name).

I have tried the sample code you have posted and it works fine after you specify the configuration file path (logging.properties either through code or java args) .

you can set your logging configuration file through command line:

$ java -Djava.util.logging.config.file=/path/to/app.properties MainClass

this way seems cleaner and easier to maintain.

Logger log = Logger.getLogger("myApp");
log.setLevel(Level.ALL);
log.info("initializing - trying to load configuration file ...");

//Properties preferences = new Properties();
try {
    //FileInputStream configFile = new //FileInputStream("/path/to/app.properties");
    //preferences.load(configFile);
    InputStream configFile = myApp.class.getResourceAsStream("app.properties");
    LogManager.getLogManager().readConfiguration(configFile);
} catch (IOException ex)
{
    System.out.println("WARNING: Could not open configuration file");
    System.out.println("WARNING: Logging not configured (console output only)");
}
log.info("starting myApp");

this is working..:) you have to pass InputStream in readConfiguration().

I have tried your code in above code don't use [preferences.load(configFile);] statement and it will work.here is running sample code

public static void main(String[]s)
{

    Logger log = Logger.getLogger("MyClass");
    try {
    FileInputStream fis =  new FileInputStream("p.properties");
    LogManager.getLogManager().readConfiguration(fis);
    log.setLevel(Level.FINE);
    log.addHandler(new java.util.logging.ConsoleHandler());
    log.setUseParentHandlers(false);

    log.info("starting myApp");
    fis.close();

    } 
    catch(IOException e) {
    e.printStackTrace();
    }
}