new IOTA Java API (1.0.0-beta.5) transaction example

IOTA-Java-tx-example

package iotaApi;

import java.util.ArrayList;
import java.util.List;

// jota - 1.0.0-beta1
import jota.IotaAPI;
import jota.dto.response.GetNewAddressResponse;
import jota.dto.response.GetNodeInfoResponse;
import jota.error.ArgumentException;
import jota.model.Input;
import jota.model.Transaction;
import jota.model.Transfer;

public class TxExample {
    public static void main(String[] args) {
        try {
            String senderSeed = "<seed>";
            String addressTo = "<address>";

            String hash = makeTx(senderSeed, addressTo);

            System.out.println("Published transaction with tail hash: " + hash);
            System.out.println("Explorer link: https://devnet.thetangle.org/transaction/" + hash);

        } catch (Throwable e) {
            System.err.println("\nERROR: Something went wrong: " + e.getMessage());
            e.printStackTrace();
        }
    }

    public static String makeTx(String seed, String address) throws ArgumentException {
        IotaAPI iotaApi = new IotaAPI.Builder()
            .protocol("https")
            .host("nodes.devnet.iota.org")
            .port("443")
            .build();

        List < Transfer > transfers = new ArrayList < Transfer > ();
        transfers.add(new Transfer(address, 1));

        int minWeightMagnitude = 14;
        int depth = 3;
        int security = 2;
        boolean validateInputs = true;
        List < Input > inputs = new ArrayList < Input > ();
        List < Transaction > tips = new ArrayList < Transaction > ();

        // get remainderAddress
        int index = 0;
        boolean checksum = false; //Ensure remainder address doesn't have checksum. Due to a bug: https://github.com/iotaledger/iota-java/issues/135
        int total = 1;
        boolean returnAll = false;
        GetNewAddressResponse getNewAddressResponse = iotaApi.getNewAddress(seed, security, index, checksum, total, returnAll);
        String remainderAddress = getNewAddressResponse.getAddresses().get(0);

        // bundle prep for all transfers
        List < String > trytesBundle = iotaApi.prepareTransfers(seed, security, transfers, remainderAddress, inputs, tips, validateInputs);

        // get latest known reference from nodeinfo
        GetNodeInfoResponse nodeInfo = iotaApi.getNodeInfo();
        String reference = nodeInfo.getLatestMilestone();

        String[] trytes = trytesBundle.toArray(new String[0]);
        List < Transaction > transactions = iotaApi.sendTrytes(trytes, depth, minWeightMagnitude, reference);

        return transactions.get(0).getHash();
    }

}