Java Log Message log(boolean console, boolean file)

Description

Configures the system log.

License

Open Source License

Parameter

Parameter	Description
console	If true, the console log is activated, false it is not.
file	If true, the file log is activated, false it is not.

Exception

Parameter	Description

Declaration

public static void log(boolean console, boolean file) throws IOException 

Method Source Code

//package com.java2s;
/* ***** BEGIN LICENSE BLOCK *****
 *
 * Copyright (c) 2005-2007 Universidade de Sao Paulo, Sao Carlos/SP, Brazil.
 * All Rights Reserved./*from   ww w  .j a v  a2s .com*/
 *
 * This file is part of Projection Explorer (PEx).
 *
 * How to cite this work:
 *  
@inproceedings{paulovich2007pex,
author = {Fernando V. Paulovich and Maria Cristina F. Oliveira and Rosane 
Minghim},
title = {The Projection Explorer: A Flexible Tool for Projection-based 
Multidimensional Visualization},
booktitle = {SIBGRAPI '07: Proceedings of the XX Brazilian Symposium on 
Computer Graphics and Image Processing (SIBGRAPI 2007)},
year = {2007},
isbn = {0-7695-2996-8},
pages = {27--34},
doi = {http://dx.doi.org/10.1109/SIBGRAPI.2007.39},
publisher = {IEEE Computer Society},
address = {Washington, DC, USA},
}
 *  
 * PEx is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU General Public License as published by the Free 
 * Software Foundation, either version 3 of the License, or (at your option) 
 * any later version.
 *
 * PEx is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
 * for more details.
 *
 * This code was developed by members of Computer Graphics and Image
 * Processing Group (http://www.lcad.icmc.usp.br) at Instituto de Ciencias
 * Matematicas e de Computacao - ICMC - (http://www.icmc.usp.br) of 
 * Universidade de Sao Paulo, Sao Carlos/SP, Brazil. The initial developer 
 * of the original code is Fernando Vieira Paulovich <fpaulovich@gmail.com>, 
 * Roberto Pinho <robertopinho@yahoo.com.br>.
 *
 * Contributor(s): Rosane Minghim <rminghim@icmc.usp.br>
 *
 * You should have received a copy of the GNU General Public License along 
 * with PEx. If not, see <http://www.gnu.org/licenses/>.
 *
 * ***** END LICENSE BLOCK ***** */

import java.io.IOException;

import java.util.logging.ConsoleHandler;
import java.util.logging.FileHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;

public class Main {
    /**
     * Configures the system log.
     * @param console If true, the console log is activated, false it is not.
     * @param file If true, the file log is activated, false it is not.
     * @throws java.io.IOException
     */
    public static void log(boolean console, boolean file) throws IOException {
        String filename = "log%g.txt";
        int limit = 10000000; // 10 Mb

        int numLogFiles = 5;

        if (file) {
            FileHandler handler = new FileHandler(filename, limit, numLogFiles, true);
            handler.setFormatter(new SimpleFormatter());
            //          handler.setFormatter(new XMLFormatter());
            handler.setLevel(Level.ALL);
            Logger.getLogger("").addHandler(handler);

            Logger.getLogger("Util").log(Level.INFO, "Adding the file logging.");
        } else {
            Logger.getLogger("Util").log(Level.INFO, "Removing the file logging.");

            Logger rootLogger = Logger.getLogger("");
            Handler[] handlers = rootLogger.getHandlers();

            for (int i = 0; i < handlers.length; i++) {
                if (handlers[i] instanceof FileHandler) {
                    rootLogger.removeHandler(handlers[i]);
                }
            }
        }

        //disable console log
        if (console) {
            Logger rootLogger = Logger.getLogger("");
            Handler[] handlers = rootLogger.getHandlers();

            for (int i = 0; i < handlers.length; i++) {
                if (handlers[i] instanceof ConsoleHandler) {
                    rootLogger.removeHandler(handlers[i]);
                }
            }

            rootLogger.addHandler(new ConsoleHandler());

            Logger.getLogger("Util").log(Level.INFO, "Adding console logging.");
        } else {
            Logger.getLogger("Util").log(Level.INFO, "Removing console logging.");

            Logger rootLogger = Logger.getLogger("");
            Handler[] handlers = rootLogger.getHandlers();

            for (int i = 0; i < handlers.length; i++) {
                if (handlers[i] instanceof ConsoleHandler) {
                    rootLogger.removeHandler(handlers[i]);
                }
            }
        }
    }
}

Related

1. log(final PrintStream logger, final Object message)
2. log(final PrintStream logger, final String message)
3. log(final String file, final String msg)
4. log(final String message, final String file)