提高开发效率 接口适配器在日常开发里面的应用

简单小例子——看结构图

public interface PayGateway {

    /**
     * 下单
     */
    void unifiedorder();

    /**
     * 退款
     */
    void refund();

    /**
     * 查询支付状态
     */
    void query();

    /**
     * 发红包
     */
    void sendRedPack();


}

public class PayGatewayAdapter implements PayGateway {

    @Override
    public void unifiedorder() {

    }

    @Override
    public void refund() {

    }

    @Override
    public void query() {

    }

    @Override
    public void sendRedPack() {

    }
}

public class ProductVideoOrder extends PayGatewayAdapter {

    @Override
    public void unifiedorder() {
        System.out.println("ProductVideoOrder unifiedorder");
    }

    @Override
    public void refund() {
        System.out.println("ProductVideoOrder refund");
    }

}

public class ProductVipOrder extends PayGatewayAdapter {

    @Override
    public void unifiedorder() {
        System.out.println("ProductVipOrder unifiedorder");
    }

    @Override
    public void refund() {
        System.out.println("ProductVipOrder refund");
    }

    @Override
    public void sendRedPack() {
        System.out.println("ProductVipOrder sendRedPack");
    }
}