Yes it is possible, all our SDKs have proxy capabilities built in. You can set the proxy details by configuring CONSTANTS.
I am using sample code from Anet ( https://github.com/AuthorizeNet/sample-code-java/blob/master/src/main/java/net/authorize/sample/Cust... ) , and I get a response (ANetApiResponse ) of 407 - Authentication Required , although I added proxy in environment(system obj System.setProperty ) and env variables as per API comments .
Can you please suggest if this issue is similar to what the thread is talking about .
How can I fix it , I am unable to test Java API in local using SANDBOX .
I ceated a SANDBOX account and passed LoginId,Transaction Key also cust ID created by calling the API directly from postman .
If i call https://apitest.authorize.net/xml/v1/request.api in POSTMAN , with proxy i get responce .But with API code 407 AUTH REQ error .