Mint Token

minttoken.java

     public void mintToken() throws ApiException, AddressExcepion, CborSerializationException {
        BackendService backendService =
                BackendFactory.getBlockfrostBackendService(Constants.BLOCKFROST_TESTNET_URL, Constant.BF_PROJECT_KEY);
        FeeCalculationService feeCalculationService = backendService.getFeeCalculationService();
        TransactionHelperService transactionHelperService = backendService.getTransactionHelperService();
        BlockService blockService = backendService.getBlockService();

        String senderMnemonic = "kit color frog trick speak employ suit sort bomb goddess jewel primary spoil fade person useless measure manage warfare reduce few scrub beyond era";
        Account sender = new Account(Networks.testnet(), senderMnemonic);

        Keys keys = KeyGenUtil.generateKey();
        VerificationKey vkey = keys.getVkey();
        SecretKey skey = keys.getSkey();

        ScriptPubkey scriptPubkey = ScriptPubkey.create(vkey);

        String policyId = scriptPubkey.getPolicyId();

        MultiAsset multiAsset = new MultiAsset();
        multiAsset.setPolicyId(policyId);
        Asset asset = new Asset("TestCoin", BigInteger.valueOf(50000));
        multiAsset.getAssets().add(asset);

        CBORMetadataMap tokenInfoMap
                = new CBORMetadataMap()
                .put("token", "Test Token")
                .put("symbol", "TTOK");

        CBORMetadataList tagList
                = new CBORMetadataList()
                .add("tag1")
                .add("tag2");

        Metadata metadata = new CBORMetadata()
                .put(new BigInteger("770001"), tokenInfoMap)
                .put(new BigInteger("770002"), tagList);


        MintTransaction mintTransaction =
                MintTransaction.builder()
                        .sender(sender)
                        .mintAssets(Arrays.asList(multiAsset))
                        .policyScript(scriptPubkey)
                        .policyKeys(Arrays.asList(skey))
                        .build();

        long ttl = blockService.getLastestBlock().getValue().getSlot() + 1000;
        TransactionDetailsParams detailsParams =
                TransactionDetailsParams.builder()
                        .ttl(ttl)
                        .build();


        BigInteger fee
                = feeCalculationService.calculateFee(mintTransaction, detailsParams, metadata);
        mintTransaction.setFee(fee);

        Result<String> result
                = transactionHelperService.mintToken(mintTransaction,     detailsParams, metadata);
        if(result.isSuccessful())
            System.out.println("Transaction Id: " + result.getValue());
        else
            System.out.println("Transaction failed: " + result);

    }