Setting Logging Levels In Java

package com.tutorialswithexamples.examples.java.logger.logging;
 
import java.util.logging.ConsoleHandler;
import java.util.logging.Level;
import java.util.logging.Logger;
 
/**
 * In this exmaple we will see how to set log levels
 * at Logger and Handler level to control the log messages .
 *
 */
public class SetLogLevelExample {
    public SetLogLevelExample() {
        super();
    }
 
    public static void main(String[] args) {
        //Create a
        final Logger _logger = Logger.getLogger("MyLogger");
        ConsoleHandler consoleHandler = new ConsoleHandler();
 
        _logger.addHandler(consoleHandler);
        //It is important to disable parent handler if any.
        _logger.setUseParentHandlers(false);
 
        //Now change the log level at handler level to see the effect 
        _logger.setLevel(Level.WARNING); 
 
        //Here we will log messages using java logger
        System.out.println("Start logging messages");
 
        //log message with SEVERE severity/level
        _logger.log(Level.SEVERE,
                   "logging severe message");
 
        //log message with warning severity/level
        _logger.log(Level.WARNING,
                   "logging warning message");
 
        //log message with info severity/level
        _logger.log(Level.INFO, "logging info message");
 
        consoleHandler.setLevel(Level.SEVERE);
        //Here we will log messages using java logger
        System.out.println("Set Log Level of Handler to SEVERE");
 
        //log message with SEVERE severity/level
        _logger.log(Level.SEVERE,
                   "Logging severe message");
 
        //log message with warning severity/level
        _logger.log(Level.WARNING,
                   "Logging warning message");
 
        //log message with info severity/level
        _logger.log(Level.INFO, "Logging info message");
 
    }
}