62 lines
1.9 KiB
Java
62 lines
1.9 KiB
Java
// logging/LoggingLevels.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 LoggingLevels {
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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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private static void logMessages() {
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lgr.info("com : info");
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lgr2.info("com.mindviewinc : info");
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util.info("util : info");
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test.severe("test : severe");
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rand.info("random : info");
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}
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public static void main(String[] args) {
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lgr.setLevel(Level.SEVERE);
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System.out.println("com 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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System.out.println(
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"individual loggers set to FINEST");
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logMessages();
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lgr.setLevel(Level.SEVERE);
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System.out.println("com level: SEVERE");
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logMessages();
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}
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}
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/* Output:
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com level: SEVERE
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individual loggers set to FINEST
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com level: SEVERE
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___[ Error Output ]___
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: util : info
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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SEVERE: test : severe
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: random : info
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: util : info
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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SEVERE: test : severe
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: random : info
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: util : info
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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SEVERE: test : severe
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Jul 22, 2016 11:55:54 AM LoggingLevels logMessages
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INFO: random : info
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*/
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