Refresh the access token for Java thick client

The refresh access token is valid for two hours by default.

If the access token is expired, a new access token can be obtained by using refresh token. These are the parameters used to renew the access token using IFS CE token endpoint.

grant_type=refresh_token
refresh_token
client id: Use as the username for HTTP basic authentication
client secret: Use as the password for HTTP Bbsic authentication

The OAuth client library automatically handles refreshing expired tokens.