摘要： package fangfachongxie; public class A extends B{ @Override //重写 //注解：有功能的注释! public void test() { System.out.println("A>=test()"); } } package fangfa 阅读全文

摘要： package duotai; public class Person { public void run(){ System.out.println("run") ; } } package duotai; public class Student extends Person { @Overri 阅读全文