How to generate access token using refresh token through google drive API?

Question

I have completed steps of authorization and obtained access token and refresh token.

What should I do next to generate access token using refresh token that I have s

Answer 1

If you using Java then follow below code snippet :

GoogleCredential refreshTokenCredential = new GoogleCredential.Builder().setJsonFactory(JSON_FACTORY).setTransport(HTTP_TRANSPORT).setClientSecrets(CLIENT_ID, CLIENT_SECRET).build().setRefreshToken(yourOldToken);
refreshTokenCredential.refreshToken(); //do not forget to call this
String newAccessToken = refreshTokenCredential.getAccessToken();