Java Command (Design Pattern) [French/Français]

.Command

Java Command (Design Pattern) [French/Français]

Command.java

public interface Command {
    void execute();
}

Faxe.java

public class Faxe implements Command {
    private String tel;

    public Faxe(String tel) {
        this.tel = tel;
    }

    public void execute() {
        System.out.println("Document faxe au numero : "+tel+".");
    }

}

Imprimante.java

import java.util.ArrayList;
import java.util.List;

public class Imprimante {
    private List<Command> history = new ArrayList<Command>();

    public void addCommand(Command command) {
        history.add(command);
        command.execute();
    }

    /**
     * Historique optionnel dans le design pattern 'command'
     */
    public void printHistory() {
        System.out.println("__HISTORIQUE__");
        for (Command command : history) {
            System.out.println(command.getClass().getName());
        }
    }
}

Imprime.java

public class Imprime implements Command {
    private String document;

    public Imprime(String document) {
        this.document = document;
    }

    public void execute() {
        System.out.println("Impression du document "+document+".");
    }

}

Main.java

public class Main {
    public static void main(String... args) {
        Imprimante imprimante = new Imprimante();

        Command imprime = new Imprime("test.pdf");
        Command scanner = new Scanner();
        Command faxe = new Faxe("514-123-4321");

        imprimante.addCommand(imprime);
        imprimante.addCommand(scanner);
        imprimante.addCommand(faxe);

        System.out.print("\n\n");

        imprimante.printHistory();
    }
}

Scanner.java

public class Scanner implements Command {
    public void execute() {
        System.out.println("Scanning en cours... ");
    }
}