JAVA接口的基本测试------JAVA入门基础教程

public class Interface
{public static void main(String[] args){System.out.println(Flyable.max_speed);System.out.println(Flyable.min_speed);//类与接口是实现关系Bullet b = new Bullet();b.attack();b.fly();Flyable f = new Bullet();f.fly();}
}interface Flyable
{public static final int min_speed = 0;public static final int max_speed = 7900;public abstract void fly();
}interface Attack
{public abstract void attack();
}class Airplane implements Flyable
{public void fly(){System.out.println("Fly");}
}class Bullet implements Attack,Flyable
{public void attack(){System.out.println("子弹袭击");}public void fly(){System.out.println("飞出去击中");}
}interface A
{public abstract void A();
}interface B
{public abstract void B();
}interface C extends A,B
//接口可以多继承
{}class D implements C
{public void A(){}public void B(){}
}