1

I'm trying to set up a transaction listening stream. I have taken the Java snippet directly from the docs. Below is the part that is giving me an issue.

Server server = new Server("https://horizon-testnet.stellar.org");
final KeyPair account = KeyPair.fromAccountId("GC2BKLYOOYPDEFJKLKY6FNNRQMGFLVHJKQRGNSSRRGSMPGF32LHCQVGF");

PaymentsRequestBuilder paymentsRequest = server.payments().forAccount(account);

paymentsRequest.stream(new EventListener<OperationResponse>() {
    @Override
    public void onEvent(OperationResponse payment) { ... }
}

I'm getting an error on the OperationResponse as the type parameter in the EventListener, specifically stating:

Type java.util.EventListener does not have type parameters

Also, the @Override is not overriding a method from its superclass and onEvent is never used.

I can't think what I am missing as this is taken straight from the docs and I know that the Stellar SDK is correctly setup in my app as I am already performing successful transactions.

FYI, this code snippet is sitting within the following method:

public void StellarTransactionListner(){
...
}
1

Please check your import statements. You may have the wrong EventListener in scope. The SDK's EventListener is type parameterised and declares the method void onEvent(T object).

  • 1
    Simple but effective! Thank you. It turns out I had import java.util.* as an import statement, which was 'blocking' the import prompt on the EventListener . – Christopher Mills Dec 13 '18 at 9:10

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.