overriding(改寫、覆載)

overriding:一般都翻成覆載，不過我覺得翻成"改寫"會比較貼切

定義:
在繼承關係之下，子類別宣告與父類別相同的method名稱、相同的引數列、相同的method型態，子類別在呼叫method時候，會執行子類別的method。這就是所謂的overriding，子類別改寫父類別的方法



如果型態不同會compile error

如果引數列不同則是overloading多載



package inheritance;
class blueeyes {
   public int attack = 3000;
    int defense = 2500;
    public void attack() {
        System.out.println("attack is " + attack);
    }
    public void defense() {
        System.out.println("defense is " + defense);
    }
}
class whitestone extends blueeyes {
   public int attack = 100;
public void attack(){
super.attack();
System.out.println("attck is is "+ attack);
}
    public void effect() {
        System.out.println("special summon blue eyes white dragon");
    }
}
public class inheritance {
    public static void main(String[] args) {
        whitestone monster = new whitestone();
         System.out.println(monster.attack);
        monster.attack();//
        blueeyes monster2 = new blueeyes();
System.out.println(monster2.attack);

    }
}