solanaj

Solana blockchain client, written in pure Java. Solanaj is an API for integrating with Solana blockchain using the Solana RPC API

Requirements

Java 11+

Dependencies

bitcoinj
OkHttp
Moshi

Example

Required properties (for testing)

secretkey.dat is required to be in the root directory.

Create a solanaj.properties file.

test.solana.pubkey = Pubkey of destination SOL wallet for testing

test.solana.pubkey.source.usdc = Pubkey of private key's USDC wallet

test.solana.pubkey.destination.usdc = Pubkey of destination's USDC wallet

Transfer lamports

RpcClient client = new RpcClient(Cluster.TESTNET);

PublicKey fromPublicKey = new PublicKey("QqCCvshxtqMAL2CVALqiJB7uEeE5mjSPsseQdDzsRUo");
PublicKey toPublickKey = new PublicKey("GrDMoeqMLFjeXQ24H56S1RLgT4R76jsuWCd6SvXyGPQ5");
int lamports = 3000;

Account signer = new Account(secret_key);

Transaction transaction = new Transaction();
transaction.addInstruction(SystemProgram.transfer(fromPublicKey, toPublickKey, lamports));

String signature = client.getApi().sendTransaction(transaction, signer);

Get balance

RpcClient client = new RpcClient(Cluster.TESTNET);

long balance = client.getApi().getBalance(new PublicKey("QqCCvshxtqMAL2CVALqiJB7uEeE5mjSPsseQdDzsRUo"));

Get Serum market + orderbooks

final PublicKey solUsdcPublicKey = new PublicKey("7xMDbYTCqQEcK2aM9LbetGtNFJpzKdfXzLL5juaLh4GJ");
final Market solUsdcMarket = new MarketBuilder()
        .setPublicKey(solUsdcPublicKey)
        .setRetrieveOrderBooks(true)
        .build();

final OrderBook bids = solUsdcMarket.getBidOrderBook();

Send a transaction with call to the "Memo" program

// Create account from private key
final Account feePayer = new Account(Base58.decode(new String(data)));
final Transaction transaction = new Transaction();

// Add instruction to write memo
transaction.addInstruction(
        MemoProgram.writeUtf8(feePayer,"Hello from SolanaJ :)")
);

String response = result = client.getApi().sendTransaction(transaction, feePayer);

Contribution

Welcome to contribute, feel free to change and open a PR.

License

Solanaj is available under the MIT license. See the LICENSE file for more info.

AustinRamos/solanaj