Java Inheritance Little Exercise

Write a class a, the object created by the class can call the method F output lowercase English alphabet. Then

Then write a subclass B of class a , requiring subclass b to inherit the method F of class a (Overrides are not allowed),

The object created by subclass B can not only call the method F output lowercase English alphabet, but also can call the child

Class New Method g output uppercase English alphabet. Finally write the main class C, the main method in the master class

Test class A with class Bin.

 Package Xiaolianxi;  Public class A {        publicvoid  f ()    {        System.out.println (" ABCDEFG ");}    }

 package   Xiaolianxi;  public  class  B extends   A { public  void          G () {System.out.println (" ABCDEFG "); }}

 Package Xiaolianxi;  Public class C {    publicstaticvoid  main (string[] args)    {        new  A ();        A.F ();         New B ();        B.G ();    }}

Java Inheritance Little Exercise