Ex2

import java.util.Scanner;

public class EX2 {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		System.out.print("x1 = ");
		int x1 = scan.nextInt();

		System.out.print("y1 = ");
		int y1 = scan.nextInt();

		System.out.print("x2 = ");
		int x2 = scan.nextInt();

		System.out.print("y2 = ");
		int y2 = scan.nextInt();

		double distance = distance(x1, y1, x2, y2);

		System.out.println("(" + x1 + ", " + y1 + ") to (" + x2 + ", " + y2 + ") => " + distance);
	}

	public static double distance(int x1, int y1, int x2, int y2) {

		return (double) Math.sqrt(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2));
	}

}