Java中抽象类的应用——模版方法的设计模式

/*** @Author: YuShiwen* @Date: 2020/11/18 3:24 PM* @Version: 1.0*/publicclassTemplateMethodTest {
publicstaticvoidmain(String[] args) {
BuyAdidasadidas=newBuyAdidas();
adidas.onlineShopping();
System.out.println();
BuyPumapuma=newBuyPuma();
puma.onlineShopping();
    }
}
abstractclassOnlineShoppingTemplate{
publicvoidopenApp(){
System.out.println("打开购物软件！");
    }
publicabstractvoidbuyGoods();
publicvoidonlinePayment(){
System.out.println("线上付款！");
    }
// 模板方法，把基本操作组合到一起，子类一般不能重写publicfinalvoidonlineShopping(){
this.openApp();
//具体执行时，挂哪个子类，就执行哪个子类的实现代码this.buyGoods();
this.onlinePayment();
    }
}
classBuyAdidasextendsOnlineShoppingTemplate{
@OverridepublicvoidbuyGoods() {
System.out.println("buy adidas goods");
    }
}
classBuyPumaextendsOnlineShoppingTemplate {
@OverridepublicvoidbuyGoods() {
System.out.println("buy puma goods");
    }
}

打开购物软件！buyadidasgoods线上付款！打开购物软件！buypumagoods线上付款！Processfinishedwithexitcode0