设计模式

 抽象工厂模式factory：

public interface Send {
	public void send();
}

public class SmsSendImpl implements Send {
	@Override
	public void send() {
		// TODO Auto-generated method stub
		System.out.println("sms send");
	}
}

public class MailSendImpl implements Send {
	@Override
	public void send() {
		// TODO Auto-generated method stub
		System.out.println("mail send");
	}
}

public class FactoryCreate {
	public Send produce(String type){
		if("mail".equals(type)){
			return new MailSendImpl();
		}else if("sms".equals(type)){
			return new SmsSendImpl();
		}else{
			return null;
		}
	}
}

public static void main(String[] args) {
		// TODO Auto-generated method stub
		FactoryCreate   fc = new FactoryCreate();
		Send send = fc.produce("sms");
		send.send();
	}　　

单例模式Singleton：

public class SingleTon {
	private static SingleTon  singleton = null ;
	public static SingleTon getInstance(){
		if(singleton == null){
			singleton = new SingleTon();
		}
		return singleton;
	}
}

public static void main(String[] args) {
		// TODO Auto-generated method stub
		SingleTon s = SingleTon.getInstance();
		System.out.println("--"+s);
	}

原型模式prototype:

public abstract class AbstractSpoon implements Cloneable {
	private String name;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	protected Object clone() throws CloneNotSupportedException {
		// TODO Auto-generated method stub
		return super.clone();
	}	
}

public class SoupSpoon extends AbstractSpoon {
	public SoupSpoon() {
		super();
		// TODO Auto-generated constructor stub
		this.setName("aaa");
	}
}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		AbstractSpoon ss = new SoupSpoon();
		String name = ss.getName();
		System.out.println("--"+name);
	}