com.password.locker.Main.java Source code

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Here is the source code for com.password.locker.Main.java

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/******************************************************************************
 * Copyright (c) 2014 Fred Laderoute.
 * All rights reserved. This program and the accompanying
 * materials are made available under the terms of the GNU 
 * Public License v3.0 which accompanies this distribution, 
 * and is available at http://www.gnu.org/licenses/gpl.html
 *
 * Contributors:
 *      Fred Laderoute - initial API and implementation
 ******************************************************************************/
package com.password.locker;

import java.security.Security;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;

import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.password.locker.util.Constants;
import com.password.locker.util.ExceptionUtils;
import com.password.locker.util.ShutdownHook;

/**
 * Application entry point.
 * @author Fred Laderoute
 *
 */
public final class Main {

    /**
     * Logger.
     */
    public static final Logger LOGGER = LoggerFactory.getLogger(Main.class);

    /**
     * Thread coordinator.
     */
    public static final ScheduledExecutorService COORDINATOR = Executors.newSingleThreadScheduledExecutor();

    /**
     * Application Constructor.
     */
    private Main() {
    }

    /**
     * Main constructor.
     * @param args
     *      arguments passed to the program.
     */
    public static void main(final String[] args) {

        Security.addProvider(new BouncyCastleProvider());
        setLookAndFeel();

        StateMonitor monitor = new StateMonitor();
        Main.COORDINATOR.scheduleAtFixedRate(monitor, Constants.MONITOR_DELAY, Constants.MONITOR_PERIOD,
                Constants.MONITOR_TIMEUNIT);
        addHook();
    }

    /**
     * Attempt to set the look and feel of the application.
     */
    private static void setLookAndFeel() {

        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (ClassNotFoundException e) {
            ExceptionUtils.fatalError(AppStart.class, e);
        } catch (InstantiationException e) {
            ExceptionUtils.fatalError(AppStart.class, e);
        } catch (IllegalAccessException e) {
            ExceptionUtils.fatalError(AppStart.class, e);
        } catch (UnsupportedLookAndFeelException e) {
            ExceptionUtils.fatalError(AppStart.class, e);
        }
    }

    /**
      * Shutdown hook.
      */
    private static void addHook() {
        Runtime.getRuntime().addShutdownHook(new ShutdownHook(Thread.currentThread()));
    }

    /**
     * Start application.
     */
    public static void appStart() {
        AppStart start = new AppStart();
        start.start();
    }
}