命令模式（3）-宏命令

一个具体命令包含一个其他命令的集合

数字接受者：

package DesignPatterns.CommandMode2;

import java.util.Random;

public class PrintNumber {
    public void printNumber()
    {
        Random random=new Random(10);
        int a=random.nextInt();
        System.out.println("number:"+a);
    }
}

语言接受者：

package DesignPatterns.CommandMode2;


public class PrintLetter {
    public void printEnglish()
    {
        String eng="English";
        System.out.println(eng);

    }
    public void printRussian()
    {
        String russian="Ж жЗ з Z 兹И и I 伊";
        System.out.println(russian);
    }
}

命令接口：

package DesignPatterns.CommandMode2;

public interface Command {
    void   execute();
}



英文具体命令：

package DesignPatterns.CommandMode2;

public class PrintEnglishCommand implements  Command{
    private PrintLetter printLetter;
    public PrintEnglishCommand(PrintLetter printLetter)
    {
        this.printLetter=printLetter;
    }
    @Override
    public void execute() {
        printLetter.printEnglish();
    }
}

俄文具体命令：

package DesignPatterns.CommandMode2;

public class PrintRussianCommand implements Command {
    private PrintLetter printLetter;
    public PrintRussianCommand(PrintLetter printLetter)
    {
        this.printLetter=printLetter;
    }
    @Override
    public void execute() {
        printLetter.printRussian();
    }
}

数字具体命令：

package DesignPatterns.CommandMode2;

public class PrintEvenNumberCommand implements Command {
    private PrintNumber printNumber;
    public PrintEvenNumberCommand(PrintNumber printNumber)
    {
        this.printNumber=printNumber;
    }
    @Override
    public void execute() {
        printNumber.printNumber();
    }
}


宏命令（包含英文命令，俄文命令，数字命令的集合）

package DesignPatterns.CommandMode2;

import java.util.ArrayList;

public class MacroCommand implements Command {
    private ArrayList<Command> arrayList;
    public MacroCommand(ArrayList<Command>  arrayList)
    {
        this.arrayList=arrayList;
    }
    @Override
    public void execute() {
        for (int i=0;i<arrayList.size();i++)
        {
           Command command=arrayList.get(i);
           command.execute();
        }
    }
}

请求者：

package DesignPatterns.CommandMode2;

public class RequestMakedir {
    private Command command;
    public void setCommand(Command command)
    {
        this.command=command;
    }
    public void executeCommand()
    {
        command.execute();
    }

}

测试类：

package DesignPatterns.CommandMode2;

import java.util.ArrayList;

public class Application {
    public static void main(String[] args) {
        ArrayList<Command> arrayList=new ArrayList<>();
        Command command1=new PrintEnglishCommand(new PrintLetter());
        Command command2=new PrintRussianCommand(new PrintLetter());
        Command command3=new PrintEvenNumberCommand(new PrintNumber());
        arrayList.add(command1);
        arrayList.add(command2);
        arrayList.add(command3);
        Command macroCommand=new MacroCommand(arrayList);
        RequestMakedir requestMakedir=new RequestMakedir();
        requestMakedir.setCommand(macroCommand);
        requestMakedir.executeCommand();
    }
}