// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.maps;

import com.google.maps.model.LatLng;
import com.google.maps.model.PlaceType;
import com.google.gson.Gson;
import java.io.IOException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;

/** Servlet that returns all PlaceTypes from Places API. */
@WebServlet("/places")
public class PlacesServlet extends HttpServlet {

    Gson gson = new Gson();

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        ArrayList<String> places = new ArrayList<>();
        
        for(PlaceType location: PlaceType.values()) {
            String place = formatLocation(location.toString());
            places.add(place.toString());
        }

        response.setContentType("text/html;");
        response.getWriter().println(gson.toJson(places));
    }

    /** Format string by capitalizing and adding spaces in-between words. */
    private String formatLocation(String place) {
        place = place.substring(0,1).toUpperCase() + place.substring(1);
        place = place.replace('_', ' ');
        return place;
    }
}

// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.maps;

import com.google.maps.model.LatLng;
import com.google.maps.model.PlaceType;
import com.google.gson.Gson;
import java.io.IOException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;

/** Servlet that returns all PlaceTypes from Places API. */
@WebServlet("/places")
public class PlacesServlet extends HttpServlet {

    private final Gson gson = new Gson();

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        ArrayList<String> places = new ArrayList<>();
        for(PlaceType location: PlaceType.values()) {
            String place = formatLocation(location.toString());
            places.add(place.toString());
        }
        response.setContentType("text/html;");
        response.getWriter().println(gson.toJson(places));
    }

    /** Format string by capitalizing and adding spaces in-between words. */
    private String formatLocation(String place) {
        place = place.substring(0,1).toUpperCase() + place.substring(1);
        place = place.replace('_', ' ');
        return place;
    }
}

Make private variable