Thread: Contains Method HELP PLEASEEEE

Hi again

Ive made the IsSqare method but now he asks us to do the Contsains method.

Rectangle class
Suppose we have a Rectangle class that begins:
class Rectangle {

private Point upperLeft; // the upper left corner point
private double height; // the height of the rectangle
private double width; // the width of the rectangle



contains method
Write a contains method that returns true if the point passed in is inside the rectangle


Thats what i wrote :

package assignement01;
 
import java.awt.Point;
import java.util.Scanner;
 
/**
 *
 * @author mouni
 */
public class Rectangle {
 
    private Point upperLeft; // the upper left corner point
    private double height; // the height of the rectangle
    private double width; // the width of the rectangle
 
 
    public static void main(String[] args) {
        // TODO code application logic here
 
        Rectangle r = new Rectangle();
        Scanner x = new Scanner(System.in);
        System.out.print("Enter Rectangle height: ");
        double height = x.nextDouble();
        System.out.print("Enter Rectangle width: ");
        double width = x.nextDouble();
        System.out.print("Enter X Point: ");
        double xheight = x.nextDouble();
         System.out.print("Enter Y Point: ");
        double ywidth = x.nextDouble();
        r.contains(p);
        p(xheight, ywidth);
    }
 
 public boolean contains(Point p) {
 
        boolean answer;
        double x_ul = upperLeft.getX();
        double y_ul = upperLeft.getY();
        double x_p = p.getX();
        double y_p = p.getY();    
 
    if ( (x_ul < x_p && x_p < x_ul + width) &&
         (y_ul - height < y_p && y_p < y_ul) ){
        answer = true;
        System.out.print("The Answer is " + answer);
    }else {
        answer = false;
        System.out.print("The Answer is " + answer); 
    }
        return answer;
    }
 
}

THANKS A LOT !!!!

These two llines are for the point coordinate... is it wrong ? Can you show me the correct code for this question ?

We need to ask the user to enter the rectangle height and width and to ask him the point and we have to know if the point is in the rectangle.

Thanks a lot

For me xheight and ywidth is the coordinate of the point. I think it is wrong. For this i am sure :

public boolean contains(Point p) {

boolean answer;
double x_ul = upperLeft.getX();
double y_ul = upperLeft.getY();
double x_p = p.getX();
double y_p = p.getY();

if ( (x_ul < x_p && x_p < x_ul + width) &&
(y_ul - height < y_p && y_p < y_ul) ){
answer = true;
System.out.print("The Answer is " + answer);
}else {
answer = false;
System.out.print("The Answer is " + answer);
}
return answer;
}

I got it by the teacher

So do you think you can help me with because I'm blocked since this morning...

Originally Posted by John Joe

what is the usage of upperLeft ?

Upper left is the upper left corner point. But seriously I don't know why we use it for

It works Thanks a lot <3 <3 <3