Sometimes we need to display Google Map on a JSP page, for this you just need pass lat/long to JSP. Use below code to initialize map in script:

var marker = null;
         var map = null;
         var markers = [];
         function initializeMap()
        {
            var map_canvas = document.getElementById('map_canvas');
            var map_options = {
                //center: myCenter,
                zoom: 15,
                mapTypeId: google.maps.MapTypeId.SATELLITE
            }
            map = new google.maps.Map(map_canvas, map_options)

        }

And use below code to update required location:

function updateMap(gps)
    {
        var latitude = "${recentLocation.latitude}";
        var longitude = "${recentLocation.logitude}";
        var gpsPoint = new google.maps.LatLng(latitude, longitude);
        if(marker != null)
            marker.setMap(null);
        if(map!=null)
            map.setCenter(gpsPoint);
        marker = new google.maps.Marker({
        position:gpsPoint,
        map:map
        });
        markers.push(marker);
    }

Define div in which you want to display Google Map:

<div id="map_canvas"></div>

This will display your location on the map.

Hope this will help you :)