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Questions tagged [java-sdk]

For questions specifically regarding the Java Software Development Kit (SDK) for Stellar client applications.

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6 votes
1 answer
101 views

minTime must be >= maxTime ? Java SDK

I'm trying to add a simple time bounds with the Java SDK to settle a transaction happening at a certain time. Code used : Instant unlockDate = Instant.now().plusSeconds(60 * 2); TimeBounds ...
Brice Faller's user avatar
6 votes
1 answer
215 views

How to listen to a third party account for stellar transactions from now?

I used paymentRequest.stream to start listen to events for a third party account. But it gets all events from the beginning if I don't provide a paging token. As it is a third party account, my ...
Hai Bi's user avatar
  • 183
6 votes
1 answer
398 views

How to sign TransactionEnvelope and post TransactionEnvelope to Horizon Server using Stellar Java SDK

I am implementing Stellar Smart Contract where in account has 2 signers. Goal is second signer can withdraw funds after certain date and if not withdrawn first signer can recover / transfer the funds. ...
Harmit's user avatar
  • 303
5 votes
2 answers
886 views

How do you cancel all open trades for a Stellar account?

I'm looking at the Java docs and I can't find any way to delete every order for an account. Is there an easy way to cancel/remove all open trades/offers?
Jovak's user avatar
  • 105
5 votes
3 answers
165 views

TimeBounds won't execute?

I struggle using the timebounds option for an operation. Use case : I want a transaction to be executed at a precise time, not before, not after. I'm doing my tests on the test network. The ...
Brice Faller's user avatar
5 votes
1 answer
2k views

Convert XDR to text

I want to convert the XDR fromat of the transaction to text using JS or java SDK in stellar.Or if there are any methods outside stellar also fine.
Sharmilan's user avatar
  • 421
5 votes
1 answer
153 views

Monitoring if offers are filled

I read the guide about watching for incoming payments, but trades on the distributed exchange don't show up as payments (this makes sense). So, I've been looking through the available RequestBuilder ...
jonbon's user avatar
  • 217
5 votes
1 answer
122 views

Stellar Java Sdk key validation?

In JavaScript SDK we have method isValidEd25519PublicKey for Stellar address validation. But in Java SDK there is no such method. How can I validate Stellar address with Java SDK?
Thái Ngô's user avatar
5 votes
3 answers
752 views

How to sign the XDR transaction envelop and and post it through java sdk?

I received the XDR envelope of a transaction. I need to sign it and submit using Java SDK. I am able to decode the XDR, but need help on how to sign and submit.
Sharmilan's user avatar
  • 421
4 votes
2 answers
268 views

How to use the ManageOfferOperation with Assets in the Java SDK?

Right now I'm playing around with the test server Server server = new Server("https://horizon-testnet.stellar.org"); The Stellar getting started guides are very well written, but definitely ...
jonbon's user avatar
  • 217
4 votes
1 answer
72 views

Extra 0 byte at end of MemoText String

I extracted a TransactionEnvelope XDR several months ago for testing. It parses fine in the lab and the SDKs. I've tried parsing it by hand and there's something I don't understand. After the ...
Synesso's user avatar
  • 3,367
4 votes
2 answers
116 views

Retrieving operations for a transaction unexpectedly slow?

I am trying to retrieve the operations for the transactions of a given ledger. First retrieve the transactions: List<TransactionResponse> transactionResponses = this.server.horizonServer() ...
Joanes Espanol's user avatar
4 votes
2 answers
482 views

How to Build transaction XDR before sign it

I want to build a transaction and convert that as XDR before sign that transaction. As i found we need to build adn sign the transaction before convert that as XDR specially in java and GO SDK. Is ...
Sharmilan's user avatar
  • 421
4 votes
1 answer
69 views

ManageOfferOperation - Not taking the price I set

I'm using the Java SDK. With the ManageOfferOperation class passing an amount and price but it's not taking the price I set. Instead it always sets a different price, which I believe is the market ...
Paul Janus Calinawan's user avatar
4 votes
1 answer
109 views

java sdk leaking threads; my fault or bug?

In the simplest case, when I have a KeyPair key for an account that doesn't yet exist, and call // private Server mServer; // declared and intialized elsewhere mServer.accounts().account(key); it ...
eehouse's user avatar
  • 41
4 votes
4 answers
510 views

How does Java parse XDR information?

I need to get the transaction records. This information seems to be in XDR. How can I parse it in Java?
xiao_Great's user avatar
3 votes
1 answer
194 views

Retrieve transaction memo text with Java API

I need to retrieve some transactions from a specific account and then read the memo. I've tried a couple of different methods with no success. My first attempt was as below, but I get odd looking memo ...
Frank's user avatar
  • 133
3 votes
1 answer
137 views

Random crash upon calling KeyPair.random() on android

I'm trying to use the stellar sdk in an android app. So I downloaded the stellar sdk and generate it's jar and include it in as a external jar in my android app. To get it working I also had to add ...
berrytchaks's user avatar
3 votes
1 answer
121 views

Stream stop get new data when finishing fetch all data and new payment was created

I using java-stellar-sdk version 0.2.0 from this: https://github.com/stellar/java-stellar-sdk/releases I did as tutorial example: @Override protected void onCreate(Bundle savedInstanceState) { ...
hungnv39's user avatar
3 votes
1 answer
89 views

paymentsRequest.stream

I'm using the android studio and I'm having trouble with paymantsRequest.stream. it's saying it can't connect to server sent event. (cannot access com.here.oksse.serversentevent) here is the code ...
Ennan's user avatar
  • 73
2 votes
1 answer
124 views

Python vs Java(script) for stellar apps. Is it worth learning a new language?

I am starting to get into programming apps for crypto, and I would like to start on the Stellar network. My programming background lies mainly in C and Python, and I am a reasonably competent self ...
KBriggs's user avatar
  • 123
2 votes
1 answer
99 views

How to parse current offers with the Java SDK

Sorry for another illiterate question, but how the heck do you parse the https://horizon-testnet.stellar.org/accounts/ACCOUNT_PUBLIC_ID/offers page? There is almost no documentation on this. I have ...
jonbon's user avatar
  • 217
2 votes
1 answer
361 views

How to setup time bounds for an escrow account?

I am trying to create 2-Party Multisignature Escrow Account with Time Lock & Recovery as in this ref:https://www.stellar.org/developers/guides/walkthroughs/stellar-smart-contracts.html Now, I ...
Patcharaphol Palapol's user avatar
2 votes
1 answer
90 views

Issue with Submit Transaction

Am using Java SDK and Horizon Testnet. Issue is when i submit a transaction using server.submitTransaction method i get following exception, please let me know if you need any more information javax....
Sang's user avatar
  • 31
2 votes
1 answer
414 views

Using Java api, how to find out the memo attached to a payment operation?

I can use the following code from example to receive payment event from public horizon. But the pos variable doesn't have memo information. Where should I get the memo from a certain paymente ...
Hai Bi's user avatar
  • 183
2 votes
1 answer
338 views

How to get Transaction amount from API?

I want to display all transactions of given users. Using the Java API, I presume I would do: server.transactions().forAccount(destination2).execute(); I would then page through the result. Each item ...
Klaus's user avatar
  • 193
2 votes
1 answer
150 views

Problem of implementation of Path Payment in a Wallet?

I made a Java implementation of a Path Payment. I created 3 accounts. For example: the first plays the role of issuer. He issued 2 assets (USD, EUR) The second has USD The third, EUR. I created an ...
Wilbau's user avatar
  • 21
2 votes
1 answer
84 views

Subscribing to incoming transaction does not work

paymentsRequest.stream(new EventListener<OperationResponse>() { @Override public void onEvent(OperationResponse payment) { System.out.println("TEST TEST TEST"); This ...
Lukáš Cyberluke Satin's user avatar
2 votes
2 answers
133 views

Java SDK: Transaction object from envelope

In Javascript SDK, transaction can be built, signed and then be converted to envelope xdr/string format. This is very useful for multi sig operations since we can retrieve the transaction object from ...
jagstock's user avatar
  • 539
2 votes
2 answers
178 views

Simple Transaction Issue

I am working on a small and very basic project, essentially doing a POC involving stellar transactions. I am a newbie with stellar. I have two clients running the same code, and a 'banker' who ...
caseyjg's user avatar
  • 29
2 votes
1 answer
173 views

Error while fetching account details from key pair [Java-stellar-sdk]

While fetching details of account using private SEED on stellar test net I am getting the below error: Error response from the server. at org.stellar.sdk.requests.ResponseHandler.handleResponse(...
white_walker's user avatar
2 votes
1 answer
269 views

`tx_bad_auth` when submit transaction to TestNet

I submit a transaction to the TestNet by using the official horizon API (https://horizon-testnet.stellar.org/), and it returns tx_bad_auth. This is my code: Server server = new Server("...
pizi's user avatar
  • 21
2 votes
1 answer
76 views

SEP 0024 Question: Where do the /info response fields referenced below come from?

I'm trying to develop an anchor server and going through the SEP0024 documentation. The documentation says "Provide a full-featured implementation of /info". Where does one find or create the fields ...
Aubrey Malabie's user avatar
2 votes
1 answer
71 views

How can I send lumens over local docker quickstart image using accounts made on local image and not the testnet

I am following the stellar walkthrough for creating two accounts, a source and a destination using the testnet. However, I would like to use my local docker quickstart image to facilitate the ...
Bobby Garza's user avatar
2 votes
1 answer
49 views

Is there anyway to get the amount of asset which you sent?

as an ashore is there anyway to get the amount of the asset which you sent to the other wallets? like the the addition operation .
Ys3's user avatar
  • 171
2 votes
1 answer
113 views

How can i can freeze credit held by another account in Stellar SDK?

I read the guide from stellar.org but still couldn't find a solution. This is the guide: https://www.stellar.org/developers/guides/issuing-assets.html https://www.stellar.org/developers/guides/...
Ys3's user avatar
  • 171
1 vote
1 answer
42 views

Receiving BaseEncodingException when signing transaction using TestNet : Invalid Input Length

Sending from Account A to B is not working in my implementation. The docs provided by stellar for Java are straight forward but I have been receiving a BaseEncodingException when trying to sign the ...
Bobby Garza's user avatar
1 vote
2 answers
43 views

How to set managed data on an account

I am new to stellar. I want to add a data to my stellar account as a key value pair. As in "Name"(Key) - "John"(Value). How can I achieve this? Pointing me to a sample code would be really ...
Ifham Pain's user avatar
1 vote
1 answer
60 views

How to access AssetResponse properties of a newly created asset? C# or Java

I'm using the C# SDK. For Example, a new Asset is created. _stellarAsset = Asset.CreateNonNativeAsset("credit_alphanum4", _assetIssuer, _assetCode); This is in a method which returns the asset ...
mrtpain's user avatar
  • 113
1 vote
1 answer
89 views

best way to store and retrieve an Asset

Does anybody know best way to store an Asset descriptor once it has been created with Asset.createNonNativeAsset(currencyName, issuingKeys);? How do we store it and retrieve the reference when we need ...
Egi Messito's user avatar
1 vote
1 answer
2k views

Multiple dex files define Lokio/AsyncTimeout$Watchdog;

After adding Stellar-SDK jar file and syncing Gradle, I did a clean and rebuild of my project and got this error. It seems that same class was used by another jar that has been added as dependency in ...
Jamie's user avatar
  • 31
1 vote
1 answer
48 views

Cannot send hashed data through ManageDataOperation

I am trying to send a data hashed using SCryptUtil provided by com.lambdaworks.crypto.SCryptUtil, convert it into array of bytes and send it to the stellar network using ManageDataOperation.Builder ...
Ifham's user avatar
  • 13
1 vote
3 answers
94 views

Payment operation listener firing off multiple times for single operation

I have implemented a payment listener in my mainActivity. It is working, except that the majority of the time it is firing off multiple times (usually 2 or 3 times) for a single payment receipt. ...
Christopher Mills's user avatar
1 vote
1 answer
68 views

Transaction Stream parameter and method not recognized

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-...
Christopher Mills's user avatar
1 vote
2 answers
122 views

Convert transaction XDR to object?

Given a base64 & XDR encoded transaction, how can I convert this into a transaction object? I already saw this answer, but couldn't find the Transaction.fromEnvelopeXdr(...) method.
Elizabeth's user avatar
1 vote
1 answer
79 views

get Transaction object from xdr base64 string

I have a base64 xdr string of a transaction. How can I convert that to a transaction object, so I can sign it e.g. transaction.sign(...)
mmdc's user avatar
  • 121
1 vote
2 answers
493 views

Trading error 400, what's the problem?

I receive an HTTP 400 error from the /transactions endpoint on public Horizon when running this code: try { Network.usePublicNetwork(); Server server = new Server("https://horizon.stellar.org"...
xiao_Great's user avatar
1 vote
1 answer
56 views

Compliance Server Request

Still new on stellar but am having a challenge when using the default compliance server for Auth_request. Keep on getting the below error. { "code": "invalid_parameter", "message": "Invalid ...
Eugene Chimita's user avatar
1 vote
1 answer
100 views

How to get wallet id of an order?

I want to block some dumpers of my coin. Is there any Java code which I can use to get the wallet id of the low offers? For example if someone is buying less then 0.1 I want to get that offer and the ...
Ys3's user avatar
  • 171
1 vote
1 answer
73 views

What API to use to get metadata of asset issuers?

I am trying to get the metadata (such as organization name, logo) of asset issuers in the Stellar network. What API should I use that could possibly contain this information when I pass the Public Key,...
Benji's user avatar
  • 11