https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/Recent content in 菜鸟面向对象 on 蛇索尼 AidenHugo -- gohugo.iozh-CNshesl-meow@qq.com (佘崧林)shesl-meow@qq.com (佘崧林)Mon, 11 Feb 2019 03:40:44 +0800https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/7.%E5%8C%85/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/7.%E5%8C%85/为了更好地组织类，Java 提供了包机制，用于区别类名的命名空间。 包的作用： 把功能相似或相关的类或接口组织在同一个包中，方便类的查找和使用。 如https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/4.%E6%8A%BD%E8%B1%A1%E7%B1%BB/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/4.%E6%8A%BD%E8%B1%A1%E7%B1%BB/http://www.runoob.com/java/java-abstraction.htmlhttps://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/3.%E5%A4%9A%E6%80%81/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/3.%E5%A4%9A%E6%80%81/http://www.runoob.com/java/java-polymorphism.htmlhttps://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/5.%E5%B0%81%E8%A3%85/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/5.%E5%B0%81%E8%A3%85/http://www.runoob.com/java/java-encapsulation.htmlhttps://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/1.%E7%BB%A7%E6%89%BF/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/1.%E7%BB%A7%E6%89%BF/类的继承格式 在 Java 中通过 extends 关键字可以申明一个类是从另外一个类继承而来的，一般形式如下： 1 2 3 4 5 class 父类 { } class 子类 extends 父类 { } 继承类型 需要注意的是https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/6.%E6%8E%A5%E5%8F%A3/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/6.%E6%8E%A5%E5%8F%A3/接口（英文：Interface），在 JAVA 编程语言中是一个抽象类型，是抽象方法的集合，接口通常以 interface 来声明。一个类通过继承接口的方式，从而来继承接https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/2.%E9%87%8D%E5%86%99%E4%B8%8E%E9%87%8D%E8%BD%BD/Mon, 11 Feb 2019 03:40:44 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/java/%E8%8F%9C%E9%B8%9F%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1/2.%E9%87%8D%E5%86%99%E4%B8%8E%E9%87%8D%E8%BD%BD/重写 Override 重写是子类对父类的允许访问的方法的实现过程进行重新编写, 返回值和形参都不能改变。即外壳不变，核心重写！ 重写的好处在于子类可以根据需要，