2ªParte - Questao 1

import aguiaj.iscte.*;
import aguiaj.iscte.Color;

class AreaRect {

    final int x;
    final int y;
    final int width;
    final int height;

    //Construtor
    public AreaRect(int x, int y, int width, int height) {
        if(x < 0 || y < 0 || width < 0 || height < 0)
            throw new IllegalArgumentException ("Valores invárlidos");
        this.x=x;
        this.y=y;
        this.width=width;
        this.height=height;
    }

    //ponto 2
    public static void selection (ColorImage image, int x, int y, int width, int height){
        Color white =  new Color(255,255,255);
        for(int i = x; i < width+x; i++){
            image.setColor(i, y, white);
            image.setColor(i, y+height, white);
        }
        for(int i = y; i < height+y; i++){
            image.setColor(x, i, white);
            image.setColor(x+width, i, white);
        }
    }

    //ponto 3
    public boolean selectionPossible (ColorImage image){
        if(width < image.getWidth() && height < image.getHeight())
            return true;
        else
            return false;

    }
}