CSC-111 Point In Triangle Homework

// Antonio C. Silvestri
// 10/13/2016
// Point in Triangle Homework

import java.util.*;

public class PointInTriangle {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter y intercept: ");
        double yint = input.nextDouble();
        System.out.print("Enter x intercept: ");
        double xint = input.nextDouble();

        if (yint <= 0 || xint <= 0)
            System.out.println("Please enter only positive intercepts.");
        else {
            System.out.print("Enter point (x,y): ");
            double x = input.nextDouble();
            double y = input.nextDouble();

            boolean pointInTriangle;
            if (x < 0 || x > xint)
                pointInTriangle = false;
            else if (y < 0)
                pointInTriangle = false;
            else {
                double yTriangle = (-yint / xint) * x + yint;
                if (y < yTriangle)
                    pointInTriangle = true;
                else
                    pointInTriangle = false;
            }

            if (pointInTriangle)
                System.out.println("Point In Triangle");
            else
                System.out.println("Point NOT In Triangle");
        }
        input.close();
    }

}