In plain Java SE 6 environment:
Logger l = Logger.getLogger(\"nameless\");
l.setLevel(Level.ALL);
l.fine(\"somemessage\");
Nothing shows up
Other users have already given good answer why it happened (ConsoleHandler has a separate level variable). I reuse my application logger's level and copy it up to the parent hiearchy. Also provides easy way to refresh levels at runtime anytime I want.
// Set same level all loggers and handlers up to the parent level
// OFF,SEVERE,WARNING,INFO,CONFIG,FINE,FINER,FINEST,ALL
Logger logger = Logger.getLogger(this.getClass().getPackage().getName());
//Level level = Level.parse("FINEST");
Level level = logger.getLevel();
Logger tempLogger = logger;
while(tempLogger != null) {
tempLogger.setLevel(level);
for(Handler handler : tempLogger.getHandlers())
handler.setLevel(level);
tempLogger = tempLogger.getParent();
}