Code Java pour le bouton et la lampe.

/*
 * Copyright (c) Régis Clouard
 * ENSICAEN, École publique d'ingénieurs et centres de recherche, Caen, FRANCE.
 * https://www.ensicaen.fr
 *
 * This file is licenced under the MIT License.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package fr.ensicaen.gl2a;

public final class BoutonEtLampe {

    public static void main( String[] args ) {
        Button button = new Button();
        button.connectTo(new Lamp());
        button.switchState();
        button.switchState();
    }
}

interface IButton {
    public void turnOn();

    public void turnOff();
}

final class Button {
    private IButton _switchable;
    private boolean _on = false;

    public Button() {
    }

    public void switchState() {
        if (_on) {
            _switchable.turnOff();
        } else {
            _switchable.turnOn();
        }
        _on = !_on;
    }

    public void connectTo( IButton switchable) {
        _switchable = switchable;
    }
}

final class Lamp implements IButton {
    public void turnOn() {
        System.out.println("Lamp on");
    }

    public void turnOff() {
        System.out.println("Lamp off");
    }
}
Modifié le: Wednesday 8 November 2017, 18:45