Confused about access token refresh

[Quo_Vadis]

I have an application that simply searches Spotify. It does not retrieve any user data. I believe that this only requires 'client credentials' and does not require a refresh token. Indeed, I have this working (I am using a Java library right now - Spotify Web API Java) to access the API).

However, the access token I get apparently expires in one hour anyway.

If this is true, how do I refresh my access? Or do I not need to do that? Very confused.

Thanks.

[SpotifyTom]

Yes, you need to get a new token every hour.  You get a new token the same way you got the first, with a Basic authentication query to /api/token using your client id and client secret, as per https://developer.spotify.com/documentation/web-api/tutorials/client-credentials-flow