继承的关系 旧城等待, 2022-08-07 16:51 183阅读 0赞 class Base \{ //定义了一个名为i的实例变量 private int i = 2; public Base() \{ this.display(); \} public void display() \{ System.out.println("Base的Display"); System.out.println(i); \} \} //继承Base的Derived子类 class Derived extends Base \{ //定义了一个名为i的实例变量 private int i = 22; //构造器,将实例变量i初始化为222 public Derived() \{ i = 222; \} public void display() \{ System.out.println("Derived的Display"); System.out.println(i); \} \} public class Test \{ public static void main(String\[\] args) \{ //创建Derived的构造器创建实例 new Derived(); \} \} ![Image 1][] [Image 1]:
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