ContractEx.java

import com.bloxbean.cardano.aiken.AikenTransactionEvaluator;
import com.bloxbean.cardano.client.account.Account;
import com.bloxbean.cardano.client.address.AddressProvider;
import com.bloxbean.cardano.client.api.exception.ApiException;
import com.bloxbean.cardano.client.api.model.Amount;
import com.bloxbean.cardano.client.api.model.Result;
import com.bloxbean.cardano.client.api.model.Utxo;
import com.bloxbean.cardano.client.backend.api.BackendService;
import com.bloxbean.cardano.client.backend.api.DefaultProtocolParamsSupplier;
import com.bloxbean.cardano.client.backend.api.DefaultUtxoSupplier;
import com.bloxbean.cardano.client.backend.blockfrost.service.BFBackendService;
import com.bloxbean.cardano.client.common.model.Networks;
import com.bloxbean.cardano.client.function.helper.ScriptUtxoFinders;
import com.bloxbean.cardano.client.function.helper.SignerProviders;
import com.bloxbean.cardano.client.plutus.spec.BigIntPlutusData;
import com.bloxbean.cardano.client.plutus.spec.BytesPlutusData;
import com.bloxbean.cardano.client.plutus.spec.ConstrPlutusData;
import com.bloxbean.cardano.client.plutus.spec.PlutusV2Script;
import com.bloxbean.cardano.client.quicktx.QuickTxBuilder;
import com.bloxbean.cardano.client.quicktx.ScriptTx;
import com.bloxbean.cardano.client.quicktx.Tx;

import java.util.List;
import java.util.Optional;

public class ContractTest {
    BackendService backendService =  new BFBackendService("http://localhost:8080/api/v1/", "");

    public void contractExec() throws ApiException {
        //Network network = new Network(0b0000, 42);
        DefaultUtxoSupplier utxoSupplier = new DefaultUtxoSupplier(backendService.getUtxoService());

        Account senderAccount =
                new Account(
                        Networks.testnet(),
                        "damp wish scrub sentence vibrant gauge tumble raven game extend winner acid side amused vote edge affair buzz hospital slogan patient drum day vital");
        String senderAddress = senderAccount.baseAddress();
        System.out.println(senderAddress);
        String cborHexScript = "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";

       PlutusV2Script plutusScript =
                PlutusV2Script.builder()
                        .cborHex(cborHexScript)
                        .build();

        String scriptAddress = AddressProvider.getEntAddress(plutusScript, Networks.testnet()).toBech32();
        System.out.println("Script Address >> " + scriptAddress);

        byte[] datumBytes = new byte[28];
        ConstrPlutusData plutusData =  ConstrPlutusData.of(0, BytesPlutusData.of(datumBytes));
        
        ConstrPlutusData redeemer =  ConstrPlutusData.of(1, BigIntPlutusData.of(10));

        Tx tx = new Tx();
        tx.payToContract(scriptAddress, List.of(Amount.ada(1000.0)), plutusData)
                .from(senderAddress);

        QuickTxBuilder quickTxBuilder = new QuickTxBuilder(backendService);
        Result<String> result =
                quickTxBuilder
                        .compose(tx)
                        .feePayer(senderAddress)
                        .withSigner(SignerProviders.signerFrom(senderAccount))
                        .completeAndWait(System.out::println);
        System.out.println("Result " + result.isSuccessful());

        if (result.isSuccessful())
            checkIfUtxoAvailable(result.getValue(), scriptAddress);

        Utxo sumUtxo = ScriptUtxoFinders.findFirstByInlineDatum(utxoSupplier, scriptAddress, plutusData).get();

        System.out.println(sumUtxo);
        ScriptTx scriptTx =
                new ScriptTx()
                        .collectFrom(sumUtxo, redeemer)
                        .attachSpendingValidator(plutusScript)
                        .payToAddress(senderAddress, Amount.ada(9.0))
                        .withChangeAddress(scriptAddress, plutusData);

        Result<String> result1 =
                quickTxBuilder
                        .compose(scriptTx)
                        .feePayer(senderAddress)
                        .withSigner(SignerProviders.signerFrom(senderAccount))
                        .withTxEvaluator(
                                new AikenTransactionEvaluator(
                                        utxoSupplier,
                                        new DefaultProtocolParamsSupplier(backendService.getEpochService())))
                        .withTxInspector(transaction -> System.out.println(transaction))
                        .completeAndWait(System.out::println);

        System.out.println(result1.getResponse());
        System.out.println("Result2 " + result1.isSuccessful());
    }

    protected void checkIfUtxoAvailable(String txHash, String address) {
        Optional<Utxo> utxo = Optional.empty();
        int count = 0;
        while (utxo.isEmpty()) {
            if (count++ >= 20)
                break;
            List<Utxo> utxos = new DefaultUtxoSupplier(backendService.getUtxoService()).getAll(address);
            utxo = utxos.stream().filter(u -> u.getTxHash().equals(txHash))
                    .findFirst();
            System.out.println("Try to get new output... txhash: " + txHash);
            try {
                Thread.sleep(1000);
            } catch (Exception e) {}
        }
    }

    public static void main(String[] args) throws ApiException {
        ContractTest test = new ContractTest();
        test.contractExec();
    }
}