185 lines
5.7 KiB
Java
185 lines
5.7 KiB
Java
// logging/LoggingLevelManipulation.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {ErrorOutputExpected}
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import java.util.logging.Level;
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import java.util.logging.Logger;
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public class LoggingLevelManipulation {
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private static Logger
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lgr = Logger.getLogger("com"),
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lgr2 = Logger.getLogger("com.mindviewinc"),
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util= Logger.getLogger("onjava"),
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test= Logger.getLogger("com.mindviewinc.test"),
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rand = Logger.getLogger("random");
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static void printLogMessages(Logger logger) {
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logger.finest(logger.getName() + " Finest");
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logger.finer(logger.getName() + " Finer");
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logger.fine(logger.getName() + " Fine");
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logger.config(logger.getName() + " Config");
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logger.info(logger.getName() + " Info");
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logger.warning(logger.getName()+" Warning");
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logger.severe(logger.getName() + " Severe");
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}
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static void logMessages() {
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printLogMessages(lgr);
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printLogMessages(lgr2);
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printLogMessages(util);
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printLogMessages(test);
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printLogMessages(rand);
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}
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static void printLevels() {
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System.out.println(" -- printing levels -- "
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+ lgr.getName()
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+ " : " + lgr.getLevel()
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+ " " + lgr2.getName()
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+ " : " + lgr2.getLevel()
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+ " " + util.getName()
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+ " : " + util.getLevel()
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+ " " + test.getName()
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+ " : " + test.getLevel()
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+ " " + rand.getName()
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+ " : " + rand.getLevel());
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}
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public static void main(String[] args) {
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printLevels();
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lgr.setLevel(Level.SEVERE);
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printLevels();
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System.out.println("net level: SEVERE");
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logMessages();
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util.setLevel(Level.FINEST);
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test.setLevel(Level.FINEST);
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rand.setLevel(Level.FINEST);
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printLevels();
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System.out.println(
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"individual loggers set to FINEST");
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logMessages();
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lgr.setLevel(Level.FINEST);
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printLevels();
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System.out.println("net level: FINEST");
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logMessages();
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}
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}
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/* Output:
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-- printing levels -- com : null com.mindviewinc : null
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onjava : null com.mindviewinc.test : null random : null
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-- printing levels -- com : SEVERE com.mindviewinc : null
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onjava : null com.mindviewinc.test : null random : null
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net level: SEVERE
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-- printing levels -- com : SEVERE com.mindviewinc : null
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onjava : FINEST com.mindviewinc.test : FINEST random :
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FINEST
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individual loggers set to FINEST
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-- printing levels -- com : FINEST com.mindviewinc : null
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onjava : FINEST com.mindviewinc.test : FINEST random :
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FINEST
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net level: FINEST
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___[ Error Output ]___
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: onjava Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: onjava Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: onjava Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc.test Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: random Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: random Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: random Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: onjava Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: onjava Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: onjava Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: com.mindviewinc.test Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: com.mindviewinc.test Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc.test Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: random Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: random Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: random Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: com Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: com Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: com.mindviewinc Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: com.mindviewinc Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: onjava Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: onjava Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: onjava Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: com.mindviewinc.test Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: com.mindviewinc.test Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: com.mindviewinc.test Severe
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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INFO: random Info
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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WARNING: random Warning
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Jul 27, 2016 10:50:42 AM LoggingLevelManipulation
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printLogMessages
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SEVERE: random Severe
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*/
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