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// : c15:LoggingLevelManipulation.java
//From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
//www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.util.logging.Level;
import java.util.logging.Logger;
public class LoggingLevelManipulation {
private static Logger lgr = Logger.getLogger("com"), lgr2 = Logger
.getLogger("com.bruceeckel"), util = Logger
.getLogger("com.bruceeckel.util"), test = Logger
.getLogger("com.bruceeckel.test"), rand = Logger
.getLogger("random");
static void printLogMessages(Logger logger) {
logger.finest(logger.getName() + " Finest");
logger.finer(logger.getName() + " Finer");
logger.fine(logger.getName() + " Fine");
logger.config(logger.getName() + " Config");
logger.info(logger.getName() + " Info");
logger.warning(logger.getName() + " Warning");
logger.severe(logger.getName() + " Severe");
}
static void logMessages() {
printLogMessages(lgr);
printLogMessages(lgr2);
printLogMessages(util);
printLogMessages(test);
printLogMessages(rand);
}
static void printLevels() {
System.out.println(" -- printing levels -- " + lgr.getName() + " : "
+ lgr.getLevel() + " " + lgr2.getName() + " : "
+ lgr2.getLevel() + " " + util.getName() + " : "
+ util.getLevel() + " " + test.getName() + " : "
+ test.getLevel() + " " + rand.getName() + " : "
+ rand.getLevel());
}
public static void main(String[] args) {
printLevels();
lgr.setLevel(Level.SEVERE);
printLevels();
System.out.println("com level: SEVERE");
logMessages();
util.setLevel(Level.FINEST);
test.setLevel(Level.FINEST);
rand.setLevel(Level.FINEST);
printLevels();
System.out.println("individual loggers set to FINEST");
logMessages();
lgr.setLevel(Level.FINEST);
printLevels();
System.out.println("com level: FINEST");
logMessages();
}
} ///:~
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