final String USER = "root";
        final String PASS = "1012";

        Connection conn = null;
        Statement stmt = null;

        try{
            //STEP 2: Register JDBC driver
            Class.forName("com.mysql.cj.jdbc.Driver");

            //STEP 3: Open a connection
            System.out.println("Connecting to database...");
            conn = DriverManager.getConnection(DB_URL,USER,PASS);

            //STEP 4: Execute a query
            System.out.println("Creating statement...");
            stmt = conn.createStatement();
            String sql;
            sql = "SELECT * FROM tb_usuario where login_usuario ='" + login_informado + "' and senha_usuario='" + password_informado + "'";
            ResultSet rs = stmt.executeQuery(sql);