这道java题怎么实现？ -

第1个回答 2020-04-02

SquareClass

length

getArea()

SquareClass obj = new SquareClass();

obj.length

area = obj.getArea();

第2个回答 2020-03-02

class SquareClass {

double length;
double getArea() {
double area = length * length;
return area;
}
}
public class Main1 {
public static void main(String[] args) {
SquareClass obj = new SquareClass();
Scanner in = new Scanner(System.in);
obj.length = in.nextDouble();
double area = obj.getArea();
System.out.println(area);
}
}

第3个回答 2020-03-04

class SquareClass {

double length;
double getArea() {
double area = length * length;
return area;
}
}
public class Main1 {
public static void main(String[] args) {
SquareClass obj = new SquareClass();
Scanner in = new Scanner(System.in);
obj.length = in.nextDouble();
double area = obj.getArea();
System.out.println(area);
}
}
额就是这个本回答被提问者采纳