工厂模式

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简单工厂模式

public interface ImpSender {    public void Send();}

public class MailSender implements ImpSender{    @Override    public void Send(){        System.out.println("this is mailsender!");    }}

public class SmsSender implements ImpSender{    @Override    public void Send(){        System.out.println("this is smssender");    }}

public class SendFactory{    public ImpSender productMail(){        return new MailSender();    }    public ImpSender productSms(){        return new SmsSender();    }}

public class FactoryTest{    public static void main(String[] args){        SendFactory factory = new SendFactory();        ImpSender sender = factory.productMail();        sender.Send();    }}

抽象工厂模式

public interface Sender{    public void Send();}

public interface Provider{    public Sender produce();}

public class MailSender implements Sender{    @Override    public void Send(){        System.out.println("this is mailsender!");    }}

public class SmsSender implements Sender{    @Override    public void Send(){        System.out.println("this is mailsender!");    }}

public class SendMailFactory implements Provider{    @Override    public Sender produce(){        return new MailSender();    }}

public class SendSmsFactory implements Provider{    @Override    public Sender produce(){        return new SmsSender();    }}

public class Test{    public static void main(String[] args){        Provider provider = new SendMailFactory();        Sender sender = provider.produce();        sender.Send();    }}

静态工厂模式

public interface Sender{    public void Send();}

public class MailSender implements Sender{    @Override    public void Send(){        System.out.println("this is mailsender!");    }}

public class SmsSender implements Sender{    @Override    public void Send(){        System.out.println("this is sms sender!");    }}

public class SendFactory{    public static Sender produceMail(){        return new MailSender();    }    public static Sender produceSms(){        return new SmsSender();    }}

public class FactoryTest{    public static void main(String[] args){        Sender sender = SendFactory.produceMail();        sender.Send();    }}

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