java计算长方体面积和周长

import java.util.Scanner;
public class Yang1014 {
public static void main(String[] args) {
double width,height,area,girth;
System.out.println(“请输入长方形的宽:”);
width=new Scanner(System.in).nextDouble();
System.out.println(“请输入长方形的长:”);
height=new Scanner(System.in).nextDouble();
area=height*height;
girth=(width+height)*2;
System.out.printf(“长方形的面积是:%f\n长方形的周长是:%f\n”,area,girth);
}
}