java入门第二季--多态--java中的抽象类

java中的抽象类代码实现Telphone.javapackage com.imooc;public abstract class Telphone { public abstract void call(); public abstract void message();}/javaDemo5/src/com/imooc/CellPhone.javapackage com.imooc;public class CellPhone extends Telphone { public void call() { // TODO Auto-generated method stub System.out.println(“通过键盘来打电话”); } public void message() { // TODO Auto-generated method stub System.out.println(“通过键盘来打短信”); }}SmartPhone.javapackage com.imooc;public class SmartPhone extends Telphone { public void call() { // TODO Auto-generated method stub System.out.println(“通过语音来打电话”); } public void message() { // TODO Auto-generated method stub System.out.println(“通过语音来发短信”); }}/javaDemo5/src/com/imooc/Initail.javapackage com.imooc;public class Initail { public static void main(String[] args) { // TODO Auto-generated method stub Telphone tel1 = new CellPhone(); tel1.call(); tel1.message(); Telphone tel2 = new SmartPhone(); tel2.call(); tel2.message(); }}运行