Java面向对象编程错误-0307

package under.lecloud.com;

import java.util.Scanner;

class Area {
	int CalcArea(int x, int y) {
		return x * y;
	}

}

class Perimeter {
	int CalcPerimeter(int m,int n){
		return (m+n)*2;
	}
}
	public class Calc {
	public static void main(String[] argv) {
		int i;
		int j;
		System.out.println("长方形的长为：");
		Scanner input = new Scanner(System.in);
		i = input.nextInt();
		System.out.println("长方形的宽为：");
		j = input.nextInt();
		Area area = new Area();
		Perimeter perimeter=new Perimeter();
		System.out.println("面积为:"+area);
                System.out.println("周长为:"+perimeter);
	}

}

　　

输出结果异常，暂未可知。

结果表明：自己太笨，基础概念没有理解。方法调用过程出错。

System.out.println("面积为:"+area.CalcArea(i,j));
System.out.println("周长为:"+perimeter.CalcPerimeter(i,j));