Ability to refresh API token?

You would neee to poll the auth endpoint to automatically generate auth tokens:

Can you please point me to the JAVA code to get the security token. The example in the link above has only the RUBY code.

@Preeti, I just added Java sample code to get the security token on this documentation page.

http://developers.marketo.com/documentation/rest/authentication/

Thank you very much

Is there a way to speicifiy (customize) the expiration time for the token?

Unfortunately not. The token expires every hour.

Thank you very much for the Java example. IT helped me move forward.

I customized it a little bit to get the token, as I was always getting a 406 error.

//////////////////////// ***************** ///////////////////
private String getToken(){
        URL url;
        String token = null;
        String marketoInstance = "https://AAA-BBB-CCC.mktorest.com/identity/oauth/token?grant_type=client_credentials";
        String oauthURL = marketoInstance + "&client_id=" + client_id + "&client_secret=" + client_secret;
        try {
            url = new URL(oauthURL);
            HttpsURLConnection urlConn = (HttpsURLConnection) url.openConnection();            
            
            if(urlConn!=null){     
                try {         
                    BufferedReader br = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));         
                    for (String x = br.readLine(); x != null; x = br.readLine()) {
                        x = x.replace("{", "");
                        x = x.replace("}", "");
                        String[] content = x.split(",");
                        for (String tkn : content) {
                            if(tkn.contains("access_token")){
                                String temp = tkn.split("\":\"")[1];
                                if(temp != null){
                                    token = temp.replace("\"", "");
                                    return token;
                                }
                            }
                        }                    
                    }

                } catch (IOException e) {
                    e.printStackTrace();
                }

            }

        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return token;
    }

I am glad you were able to get it working!