package?com.imooc;

public?abstract?class?shape?{
?public?abstract?void?Rectangle();//周長
?public?abstract?void?circle();//面積
}
//下面是長方形的子類
package?com.imooc;
//這是個長方形的子類
public?class?rectangle?extends?shape?{
	?int?svm=10;
	????int?sam=5;
	@Override
	public?void?Rectangle()?{
		//?TODO?Auto-generated?method?stub
????
????int?avg=svm+sam;
????System.out.println("這個長方形的周長是:"+avg);
	}

	@Override
	public?void?circle()?{
		//?TODO?Auto-generated?method?stub
?int?ave=svm*sam;
?System.out.println("這個長方形的面積是:"+ave);
	}

}
//下面是圓的子類
package?com.imooc;
//這是個圓形的子類
public?class?Circle?extends?shape?{
??int?svm=5;
	float?sam=3.14f;	??
	@Override
	public?void?Rectangle()?{
		//?TODO?Auto-generated?method?stub
???double?avg=sam*(svm*2);
		???System.out.println("圓周的長是"+avg);
	}

	@Override
	public?void?circle()?{
		//?TODO?Auto-generated?method?stub
float?ave=sam*(svm*svm);
System.out.println("圓的面積是"+ave);
	}

}
//下面是測試
package?com.imooc;

public?class?Initail?{

	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub
????shape?obj1=new?rectangle();
????shape?obj2=new?Circle();
????obj1.Rectangle();
????obj1.circle();
????obj2.Rectangle();
????obj2.circle();
	}

}