TRY LANG

try{
            Class.forName("com.mysql.jdbc.Driver");
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/testdb?autoReconnect=true&useSSL=false", "root", "admin");

            PreparedStatement ps;

            String query = "INSERT INTO test_table values(?)";
            ps = con.prepareStatement(query);

            ps.setString(1, string);

            ps.executeUpdate();

            ps.close();
            con.close();
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
        return "Success";