automobileextends.java

《Java面向对象程序设计》例子源代码.轻松学习书本.

class Automobile{							//超类
	int Number;
	void setNumber(int Num){
		Number=Num;
	}
	void showNumber(){
		System.out.println("Automobile number:"+Number);
	}
}

class Truck extends Automobile{				//派生类
	int capacity;
	void setCapacity(int truckCapacity){
		capacity=truckCapacity;
	}
	void showCapacity(){
		System.out.println("Truck Capacity:"+capacity);
	}
}

class AutomobileExtends{
	public static void main(String args[]){
		Truck tc=new Truck();
		tc.setNumber(8888);	//派生类使用从超类中继承的方法setNumber
		tc.setCapacity(10);
		tc.showNumber();		//派生类使用从超类中继承的方法showNumber
		tc.showCapacity();
	}
}