// TODO: Add the method:
 public int compareTo(EarthquakeMarker marker) {
   if (marker.getMagnitude() < this.getMagnitude()) {
     return -1;
   } else if (this.getMagnitude() < marker.getMagnitude()) {
     return 1;
   } else {
     return 0;
   }
   //    return Float.compare(marker.getMagnitude(), this.getMagnitude());
 }
 // prints countries with number of earthquakes
 // You will want to loop through the country markers or country features
 // (either will work) and then for each country, loop through
 // the quakes to count how many occurred in that country.
 // Recall that the country markers have a "name" property,
 // And LandQuakeMarkers have a "country" property set.
 private void printQuakes() {
   int totalWaterQuakes = quakeMarkers.size();
   for (Marker country : countryMarkers) {
     String countryName = country.getStringProperty("name");
     int numQuakes = 0;
     for (Marker marker : quakeMarkers) {
       EarthquakeMarker eqMarker = (EarthquakeMarker) marker;
       if (eqMarker.isOnLand()) {
         if (countryName.equals(eqMarker.getStringProperty("country"))) {
           numQuakes++;
         }
       }
     }
     if (numQuakes > 0) {
       totalWaterQuakes -= numQuakes;
       System.out.println(countryName + ": " + numQuakes);
     }
   }
   System.out.println("OCEAN QUAKES: " + totalWaterQuakes);
 }
 // Helper method that will check if an earthquake marker was clicked on
 // and respond appropriately
 private void checkEarthquakesForClick() {
   if (lastClicked != null) return;
   // Loop over the earthquake markers to see if one of them is selected
   for (Marker m : quakeMarkers) {
     EarthquakeMarker marker = (EarthquakeMarker) m;
     if (!marker.isHidden() && marker.isInside(map, mouseX, mouseY)) {
       lastClicked = marker;
       // Hide all the other earthquakes and hide
       for (Marker mhide : quakeMarkers) {
         if (mhide != lastClicked) {
           mhide.setHidden(true);
         }
       }
       for (Marker mhide : cityMarkers) {
         if (mhide.getDistanceTo(marker.getLocation()) > marker.threatCircle()) {
           mhide.setHidden(true);
         }
       }
       return;
     }
   }
 }