public Connection getConnection() throws SQLException, ClassNotFoundException  {
    Class.forName("com.mysql.jdbc.Driver");
    con=DriverManager.getConnection("jdbc:mysql://182.31.456.32:3306/"+database+"",""+username+"",""+password+"");
   // stm=con.createStatement();
    return con;
}

public class DBHandler{

    private static Connection conn = null;

    private DBHandler(String connString){
        Class.forName("com.mysql.jdbc.Driver");
        conn=DriverManager.getConnection(connString);
    }

    public static void getConnection(String connString) {
        if (conn == null)
            new DBHandler(String connString);
        return conn;
    }
}