Whats wrong
package com.codegym.task.task06.task0609;
/*
Distance between two points
*/
public class Util {
public static double getDistance(int x1, int y1, int x2, int y2) {
double a =(((x2-x1) * (x2-x1)) - ((y2-y1)*(y2-y1)));
return(Math.sqrt(a));
}
public static void main(String[] args) {
getDistance(1,2,3,4);
}
}