how to get access token using refresh token in java

Hi sanjeev_hansanur1,

There are some examples where you can select from to test or get idea. You don't need access token directly since Dropbox Java SDK takes care about it. To create client object you need to create DbxCredential object (for accessToken set some arbitrary string and for expiresAt set zero). Depending on selected OAuth method (when you got your refresh token) you may need other DbxCredential constructor to success (appSecret in addition). At the end create a DbxClientV2 object and use it as you want to. 😉 That's it.

Hope this helps.

You can also find examples of this functionality in the Dropbox API v2 Java SDK here.

For Android apps in particular, if relevant in your case, using the official Dropbox API v2 Java SDK, you should use the updated authorization functionality, starting with the startOAuth2PKCE method. You can find an example app here. For instance, you can see where that starts in the code here and how the result is handled here. When you use that functionality as shown, the SDK will then handle the refresh process for you automatically.)

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Edit: updated links.