TriangleArea

package javaSyntaxix;

import java.util.Scanner;

public class TriangleArea {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String firstPoint = sc.nextLine();
        String firstArr[] = firstPoint.split(" ");
        int ax = Integer.parseInt(firstArr[0]);
        int ay = Integer.parseInt(firstArr[1]);
        String secondPoint = sc.nextLine();
        String secondArr[] = secondPoint.split(" ");
        int bx = Integer.parseInt(secondArr[0]);
        int by = Integer.parseInt(secondArr[1]);
        String thirdPoint = sc.nextLine();
        String thirdArr[] = thirdPoint.split(" ");
        int cx = Integer.parseInt(thirdArr[0]);
        int cy = Integer.parseInt(thirdArr[1]);
        int area = (ax*(by-cy) + bx*(cy-ay) + cx*(ay-by))/2;
        if(area>=0) System.out.println(area);
        else System.out.println(area*-1);
    }

}