Problem 2. Triangle Area

import java.util.Scanner;


public class TriangleArea {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		//A
		System.out.print("Enter triangle point a: ");
		int ax = input.nextInt();
		int ay = input.nextInt();

		//B
		System.out.print("Enter triangle point b: ");
		int bx = input.nextInt();
		int by = input.nextInt();

		//C
		System.out.print("Enter triangle point c: ");
		int cx = input.nextInt();
		int cy = input.nextInt();

		//Area
		int area=(ax*(by-cy)+bx*(cy-ay)+cx*(ay-by))/2;
		System.out.println(Math.abs(area));

	}

}