Lesson 20 Activity

import java.util.Scanner;
import java.lang.Math;

class Lesson_20_Activity {
    public static void main(String[] args){

      Scanner scan = new Scanner(System.in);
      double longitude = 0;
      double latitude = 0;
      int flag = 1;
      double maxlat = -91;
      double maxlon = -181;
      double minlat = 91;
      double minlon = 181;
      TEST:
      while (flag != 0)
      {
        System.out.println("Please enter the latitude:");
        latitude = scan.nextDouble();
        System.out.println("Please enter the longitude:");
        longitude = scan.nextDouble();
        if (latitude >= -90 && latitude <= 90 && longitude >= -180 && longitude <= 180)
        {
        if (latitude > maxlat)
          maxlat = latitude;
        if (latitude < minlat)
          minlat = latitude;
        if (longitude > maxlon)
          maxlon = longitude;
        if (longitude < minlon)
          minlon = longitude;
        }
        else
        {
          System.out.println("Incorrect Latitude or Longitude");
          continue TEST;
        }
     /*   if (longitude >= -180 && longitude <= 180)
        {
        if (longitude > maxlon)
          maxlon = longitude;
        if (longitude < minlon)
          minlon = longitude;
        }*/
        System.out.println("Would you like to enter another location?");
        flag = scan.nextInt();
      }

      System.out.println("Farthest North: " + maxlat);
      System.out.println("Farthest South: " + minlat);
      System.out.println("Farthest East: " + maxlon);
      System.out.println("Farthest West: " + minlon);
}
}