Get JSON from MySQL -- Java

DatabaseGet.java

import org.json.JSONArray;
import org.json.JSONObject;
import java.sql.*;
/**
 * Created by Mitchell on 6/26/2015.
 */
public class DatabaseGet {
    private Connection connection = null;
    public DatabaseGet(String host, String username, String password, String database){
        String HOST = "jdbc:mysql://" + host + "/" + database;

        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

        try {
            connection = DriverManager
                    .getConnection(HOST, username, password);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        if(connection != null){
            System.out.println("Connected to " + HOST);
        } else {
            System.out.println("Not Connected");
        }
    }

    public JSONArray getResultsJSONArray(String sql){
        java.sql.Statement statement;
        JSONArray jsonArray = new JSONArray();

        try {
            statement = connection.createStatement();
            ResultSet rs = statement.executeQuery(sql);
            Integer i = 0;
            ResultSetMetaData rsmd = rs.getMetaData();
            int columnCount = rsmd.getColumnCount();
            while (rs.next()){
                JSONObject jsonObject = new JSONObject();
                for (int ii = 1; ii < columnCount + 1; ii++ ) {
                    String alias = rsmd.getColumnLabel(ii);
                    jsonObject.put(alias, rs.getObject(alias));
                }
                jsonArray.put(i, jsonObject);
                i++;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return jsonArray;
    }

    public void CloseConnection(){
        try {
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

//http://stackoverflow.com/a/4271250/1009816
//http://stackoverflow.com/a/3818712/1009816
//http://stackoverflow.com/a/8392985/1009816