package?com.imooc;
import?java.util.Scanner;

public?class?Rectangle?extends?Base?{
	
	private?static?double?chang;
	private?static?double?kuan;
	
	public?Rectangle()?{
		//?TODO?Auto-generated?constructor?stub
		Scanner?input?=?new?Scanner(System.in);
		System.out.println("請輸入長：");
		chang?=?input.nextDouble();
		System.out.println("請輸入寬：");
		kuan?=?input.nextDouble();
		input.close();
		
	}?

	@Override
	public?void?zhouchang()?{
		//?TODO?Auto-generated?method?stub
		double?zhouchang?=?2*chang+2*kuan;
		System.out.println("周長是："+zhouchang);

	}

	@Override
	public?void?mianji()?{
		//?TODO?Auto-generated?method?stub
		double?mianji?=?chang?*?kuan;
		System.out.println("面積是："+mianji);

	}

}

package?com.imooc;
import?java.util.Scanner;

public?class?Initial?{

	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub
		Initial?o?=?new?Initial();
		o.sw();
	
	}
	public?void?sw(){
		System.out.println("請輸入你要選擇計算的形狀：");
		System.out.println("1、矩形???2、圓形");
		Scanner?input?=?new?Scanner(System.in);
		int?temp?=?input.nextInt();
		switch(temp){
		case?1:
			Base?Rec?=?new?Rectangle();
			Rec.zhouchang();
			Rec.mianji();
			break;
		case?2:
			Base?Cir?=?new?Circle();
			Cir.zhouchang();
			Cir.mianji();
			break;
		default:
			System.out.println("輸出出錯退出！");
			break;
		}
	}

}