9-1-1

package infohiding09;
 
public class Info090101 {
    public static void main(String[] args)
    {
        System.out.println("1");
        Rectangle rec = new Rectangle(-1,2,3,4);
        System.out.println("");
        System.out.println("2");
        Rectangle rec2 = new Rectangle(5,2,3,4);
        System.out.println("");
        System.out.println("3");
        Rectangle rec3 = new Rectangle(5,2,9,4);
        System.out.println("");
        
        rec.showArea();
        rec2.showArea();
        rec3.showArea();
    }
}
 
class Rectangle
{
    private int ux,uy;
    private int lx,ly;
    
    public Rectangle(int a, int b,int s, int d)
    {
        if(a<100&& a>0){
            if((a>=s) && (b>=d)){
                System.out.println("a가 더 크다.");
            }
            if((a<s)&&(b<d)){
                ux= a;
                uy= b;
                lx = s;
                ly =d;
                System.out.println("범위 통과.");
            }
        }
        else{
            System.out.println("값이 잘못되었다. 100이하0이상");
        }
    }
    
    public void showArea()
    {
        System.out.println(""+lx+ly+ux+uy);
        int xlen= lx-ux;
        int ylen= ly -uy;
        System.out.println("넓이: "+ (xlen*ylen));
    }
}