这是我的密码：

public class methodAssignment {

  public static void main(String[] args) {
        KeyboardReader reader= new KeyboardReader();
        int num1=reader.readInt("Enter the length of the rectangle: ");
        int num2=reader.readInt("Enter the width of the rectangle: ");

        int perimeter=rectPerimeter(num1, num2);

        System.out.print("\nThe perimeter of the rectangle is "+perimeter+".");
    }

    public static int rectPerimeter(int length, int width)
    {
        return 2*length+2*width;
    }
}

我尝试过在行尾添加另一个{，但这只会导致更多错误，正如您所期望的那样。我错过了什么？