package?com.imooc;//抽象Telphone類
public?abstract?class?Telphone{
public?abstract?void?call();
public?abstract?void?mesage();
}

package?com.imooc;//Cellphone?類繼承了Telphone抽象類
pablic?class?Cellphone?extends?Telphone{

public?void?call(){
System.out.println("通過鍵盤打電話");
}

public?void?message(){
??System.out.println("通過鍵盤發(fā)短信");
}

}