areaofcircle

gistfile1.txt

                Scanner input = new Scanner(System.in);
                int[] circle = new int[6];

                System.out.print("Enter circle's (x1,y1) (x2,y2) (x3,y3) coordinates ( like this ->1 2 3 4 5 6)--->");
                circle[0] = input.nextInt();
                circle[1] = input.nextInt();
                circle[2] = input.nextInt();
                circle[3] = input.nextInt();
                circle[4] = input.nextInt();
                circle[5] = input.nextInt();
               
                 double r;
                    slope1 = (circle[3] - circle[1]) / (circle[2] - circle[0]);
                    slope2 = (circle[5] - circle[3]) / (circle[4] - circle[2]);
                    double xcomp =  (((slope1 * slope2) * (circle[1] - circle[5])) + slope2*(circle[0]+circle[2]) - slope1*(circle[2]+circle[4])) / (2*(slope2-slope1));
                    double ycomp = ((-1 / slope1)*(xcomp-(circle[0]+circle[2])/2)) +(circle[1]+circle[3])/2 ;
                    r = (int) Math.sqrt((circle[2] - xcomp) * (circle[2] - xcomp) + (circle[3] - ycomp) * (circle[3] - ycomp));

                   boolean equation = ((circle[3] - circle[1]) * (circle[4] - circle[2])) != ((circle[5] - circle[3]) * (circle[2] - circle[0]));
                    
                    if (equation) {
                        System.out.print("(" + circle[0] + "," + circle[1] + ")" + " (" + circle[2] + "," + circle[3] + ")" + " (" + circle[4] + "," + circle[5] + ") ");
                        System.out.print(" coordinates form a circle ");
                        System.out.println("and the area of the circle is " + r * r * 3.14 + "cm2");


                    } else if (circle[0] == circle[2] && circle[0] == circle[4] /*&& numbers[2]==numbers[4]*/) {
                        System.out.print("(" + circle[0] + "," + circle[1] + ")" + " (" + circle[2] + "," + circle[3] + ")" + " (" + circle[4] + "," + circle[5] + ") ");
                        System.out.println(" coordinates do not form a circle ");

                    }
                    else if (circle[1] == circle[3] && circle[1] == circle[5]) {
                        System.out.print("(" + circle[0] + "," + circle[1] + ")" + " (" + circle[2] + "," + circle[3] + ")" + " (" + circle[4] + "," + circle[5] + ") ");
                        System.out.println(" coordinates do not form a circle ");
                    }
                        else
                    {
                        System.out.print("(" + circle[0] + "," + circle[1] + ")" + " (" + circle[2] + "," + circle[3] + ")" + " (" + circle[4] + "," + circle[5] + ") ");
                        System.out.println(" coordinates do not form a circle ");
                    }