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Signed-off-by: Nikita Lebedev <[email protected]>
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examples/src/main/java/com/hedera/hashgraph/sdk/examples/TokenRejectExample.java
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| package com.hedera.hashgraph.sdk.examples; | ||
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| import com.hedera.hashgraph.sdk.AccountBalanceQuery; | ||
| import com.hedera.hashgraph.sdk.AccountCreateTransaction; | ||
| import com.hedera.hashgraph.sdk.AccountDeleteTransaction; | ||
| import com.hedera.hashgraph.sdk.AccountId; | ||
| import com.hedera.hashgraph.sdk.Client; | ||
| import com.hedera.hashgraph.sdk.PrecheckStatusException; | ||
| import com.hedera.hashgraph.sdk.PrivateKey; | ||
| import com.hedera.hashgraph.sdk.ReceiptStatusException; | ||
| import com.hedera.hashgraph.sdk.TokenCreateTransaction; | ||
| import com.hedera.hashgraph.sdk.TokenDeleteTransaction; | ||
| import com.hedera.hashgraph.sdk.TokenMintTransaction; | ||
| import com.hedera.hashgraph.sdk.TokenRejectFlow; | ||
| import com.hedera.hashgraph.sdk.TokenRejectTransaction; | ||
| import com.hedera.hashgraph.sdk.TokenSupplyType; | ||
| import com.hedera.hashgraph.sdk.TokenType; | ||
| import com.hedera.hashgraph.sdk.TransferTransaction; | ||
| import io.github.cdimascio.dotenv.Dotenv; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.TimeoutException; | ||
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| public class TokenRejectExample { | ||
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| // see `.env.sample` in the repository root for how to specify these values | ||
| // or set environment variables with the same names | ||
| private static final AccountId OPERATOR_ID = AccountId.fromString(Objects.requireNonNull(Dotenv.load().get("OPERATOR_ID"))); | ||
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| private static final PrivateKey OPERATOR_KEY = PrivateKey.fromString(Objects.requireNonNull(Dotenv.load().get("OPERATOR_KEY"))); | ||
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| // HEDERA_NETWORK defaults to testnet if not specified in dotenv | ||
| private static final String HEDERA_NETWORK = Dotenv.load().get("HEDERA_NETWORK", "testnet"); | ||
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| private TokenRejectExample() {} | ||
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| public static void main(String[] args) | ||
| throws TimeoutException, PrecheckStatusException, ReceiptStatusException, InterruptedException { | ||
| Client client = ClientHelper.forName(HEDERA_NETWORK); | ||
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| // Defaults the operator account ID and key such that all generated transactions will be paid for | ||
| // by this account and be signed by this key | ||
| client.setOperator(OPERATOR_ID, OPERATOR_KEY); | ||
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| // create a treasury account | ||
| var treasuryAccountPrivateKey = PrivateKey.generateED25519(); | ||
| var treasuryAccountId = new AccountCreateTransaction() | ||
| .setKey(treasuryAccountPrivateKey.getPublicKey()) | ||
| .setMaxAutomaticTokenAssociations(100) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client) | ||
| .accountId; | ||
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| // create a receiver account with unlimited max auto associations | ||
| var receiverAccountPrivateKey = PrivateKey.generateED25519(); | ||
| var receiverAccountId = new AccountCreateTransaction() | ||
| .setKey(receiverAccountPrivateKey.getPublicKey()) | ||
| .setMaxAutomaticTokenAssociations(-1) | ||
| .freezeWith(client) | ||
| .sign(receiverAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client) | ||
| .accountId; | ||
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| // create a fungible token | ||
| var fungibleTokenId = new TokenCreateTransaction() | ||
| .setTokenName("Example Fungible Token") | ||
| .setTokenSymbol("EFT") | ||
| .setTokenMemo("I was created for demo") | ||
| .setDecimals(0) | ||
| .setInitialSupply(1_000_000) | ||
| .setMaxSupply(1_000_000) | ||
| .setTreasuryAccountId(treasuryAccountId) | ||
| .setSupplyType(TokenSupplyType.FINITE) | ||
| .setAdminKey(treasuryAccountPrivateKey.getPublicKey()) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client) | ||
| .tokenId; | ||
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| // create NFT | ||
| var nonFungibleTokenId = new TokenCreateTransaction() | ||
| .setTokenName("Example NFT") | ||
| .setTokenSymbol("ENFT") | ||
| .setTokenType(TokenType.NON_FUNGIBLE_UNIQUE) | ||
| .setTreasuryAccountId(treasuryAccountId) | ||
| .setSupplyType(TokenSupplyType.FINITE) | ||
| .setMaxSupply(3) | ||
| .setAdminKey(treasuryAccountPrivateKey.getPublicKey()) | ||
| .setSupplyKey(treasuryAccountPrivateKey.getPublicKey()) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client) | ||
| .tokenId; | ||
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| // mint 3 NFTs | ||
| var mintReceiptNftToken = new TokenMintTransaction() | ||
| .setTokenId(nonFungibleTokenId) | ||
| .setMetadata(generateNftMetadata((byte) 3)) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| var nftSerials = mintReceiptNftToken.serials; | ||
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| // transfer the tokens to the receiver | ||
| new TransferTransaction() | ||
| .addTokenTransfer(fungibleTokenId, treasuryAccountId, -1_000) | ||
| .addTokenTransfer(fungibleTokenId, receiverAccountId, 1_000) | ||
| .addNftTransfer(nonFungibleTokenId.nft(nftSerials.get(0)), treasuryAccountId, receiverAccountId) | ||
| .addNftTransfer(nonFungibleTokenId.nft(nftSerials.get(1)), treasuryAccountId, receiverAccountId) | ||
| .addNftTransfer(nonFungibleTokenId.nft(nftSerials.get(2)), treasuryAccountId, receiverAccountId) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| var receiverAccountBalance = new AccountBalanceQuery() | ||
| .setAccountId(receiverAccountId) | ||
| .execute(client); | ||
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| System.out.println("Receiver account has: " + receiverAccountBalance.tokens.get(fungibleTokenId) + " example fungible tokens."); | ||
| System.out.println("Receiver account has: " + receiverAccountBalance.tokens.get(nonFungibleTokenId) + " example NFTs."); | ||
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| System.out.println("Receiver rejects example fungible tokens..."); | ||
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| // reject the fungible token | ||
| new TokenRejectTransaction() | ||
| .setOwnerId(receiverAccountId) | ||
| .addTokenId(fungibleTokenId) | ||
| .freezeWith(client) | ||
| .sign(receiverAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| System.out.println("Receiver rejects example NFTs..."); | ||
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| // execute the token reject flow | ||
| new TokenRejectFlow() | ||
| .setOwnerId(receiverAccountId) | ||
| .setNftIds(List.of( | ||
| nonFungibleTokenId.nft(nftSerials.get(0)), | ||
| nonFungibleTokenId.nft(nftSerials.get(1)), | ||
| nonFungibleTokenId.nft(nftSerials.get(2)) | ||
| )) | ||
| .freezeWith(client) | ||
| .sign(receiverAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| var receiverAccountBalanceAfterTokenReject = new AccountBalanceQuery() | ||
| .setAccountId(receiverAccountId) | ||
| .execute(client); | ||
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| System.out.println("Receiver account has (after executing TokenReject): " + receiverAccountBalanceAfterTokenReject.tokens.get(fungibleTokenId) + " example fungible tokens."); | ||
| System.out.println("Receiver account has (after executing TokenRejectFlow): " + receiverAccountBalanceAfterTokenReject.tokens.get(nonFungibleTokenId) + " example NFTs."); | ||
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| var treasuryAccountBalance = new AccountBalanceQuery() | ||
| .setAccountId(treasuryAccountId) | ||
| .execute(client); | ||
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| System.out.println("Treasury account has: " + treasuryAccountBalance.tokens.get(fungibleTokenId) + " example fungible tokens."); | ||
| System.out.println("Treasury account has: " + treasuryAccountBalance.tokens.get(nonFungibleTokenId) + " example NFTs."); | ||
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| // clean up | ||
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| new AccountDeleteTransaction() | ||
| .setAccountId(treasuryAccountId) | ||
| .setTransferAccountId(OPERATOR_ID) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client); | ||
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| new AccountDeleteTransaction() | ||
| .setAccountId(receiverAccountId) | ||
| .setTransferAccountId(OPERATOR_ID) | ||
| .freezeWith(client) | ||
| .sign(receiverAccountPrivateKey) | ||
| .execute(client); | ||
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| new TokenDeleteTransaction() | ||
| .setTokenId(fungibleTokenId) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| new TokenDeleteTransaction() | ||
| .setTokenId(nonFungibleTokenId) | ||
| .freezeWith(client) | ||
| .sign(treasuryAccountPrivateKey) | ||
| .execute(client) | ||
| .getReceipt(client); | ||
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| client.close(); | ||
| } | ||
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| private static List<byte[]> generateNftMetadata(byte metadataCount) { | ||
| List<byte[]> metadatas = new ArrayList<>(); | ||
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| for (byte i = 0; i < metadataCount; i++) { | ||
| byte[] md = {i}; | ||
| metadatas.add(md); | ||
| } | ||
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| return metadatas; | ||
| } | ||
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| } |
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