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简化参数传递.
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让代码有层次结构.
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public class Goods { private String name; private String type; private String brand; private float price; } public class Pear extends Goods { } public Consumer { public void buy(Goods goods) { System.out.println("购物啦"); } }
rickq95 2018-10-05 18:22 原文
在原有对象的基础上,扩展自身特性。
简化参数传递.
让代码有层次结构.
代码示例
public class Goods { private String name; private String type; private String brand; private float price; } public class Pear extends Goods { } public Consumer { public void buy(Goods goods) { System.out.println("购物啦"); } }