Examples with ContractDeleteTransaction com.hedera.hashgraph.sdk.ContractDeleteTransaction used on opensource projects

Example 26 with ContractDeleteTransaction

use of com.hedera.hashgraph.sdk.ContractDeleteTransaction in project hedera-sdk-java by hashgraph.

the class CreateSimpleContractExample method main.

public static void main(String[] args) throws PrecheckStatusException, IOException, TimeoutException, ReceiptStatusException {
    ClassLoader cl = CreateSimpleContractExample.class.getClassLoader();
    Gson gson = new Gson();
    JsonObject jsonObject;
    try (InputStream jsonStream = cl.getResourceAsStream("hello_world.json")) {
        if (jsonStream == null) {
            throw new RuntimeException("failed to get hello_world.json");
        }
        jsonObject = gson.fromJson(new InputStreamReader(jsonStream, StandardCharsets.UTF_8), JsonObject.class);
    }
    String byteCodeHex = jsonObject.getAsJsonPrimitive("object").getAsString();
    Client client = Client.forName(HEDERA_NETWORK);
    // 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);
    // create the contract's bytecode file
    TransactionResponse fileTransactionResponse = new FileCreateTransaction().setKeys(OPERATOR_KEY).setContents(byteCodeHex.getBytes(StandardCharsets.UTF_8)).setMaxTransactionFee(new Hbar(2)).execute(client);
    TransactionReceipt fileReceipt = fileTransactionResponse.getReceipt(client);
    FileId newFileId = Objects.requireNonNull(fileReceipt.fileId);
    System.out.println("contract bytecode file: " + newFileId);
    // create the contract itself
    TransactionResponse contractTransactionResponse = new ContractCreateTransaction().setGas(500000).setBytecodeFileId(newFileId).setAdminKey(OPERATOR_KEY).setMaxTransactionFee(new Hbar(16)).execute(client);
    TransactionReceipt contractReceipt = contractTransactionResponse.getReceipt(client);
    System.out.println(contractReceipt);
    ContractId newContractId = Objects.requireNonNull(contractReceipt.contractId);
    System.out.println("new contract ID: " + newContractId);
    ContractFunctionResult contractCallResult = new ContractCallQuery().setGas(500000).setContractId(newContractId).setFunction("greet").setQueryPayment(new Hbar(1)).execute(client);
    if (contractCallResult.errorMessage != null) {
        System.out.println("error calling contract: " + contractCallResult.errorMessage);
        return;
    }
    String message = contractCallResult.getString(0);
    System.out.println("contract message: " + message);
    // now delete the contract
    TransactionReceipt contractDeleteResult = new ContractDeleteTransaction().setContractId(newContractId).setTransferAccountId(contractTransactionResponse.transactionId.accountId).setMaxTransactionFee(new Hbar(1)).execute(client).getReceipt(client);
    if (contractDeleteResult.status != Status.SUCCESS) {
        System.out.println("error deleting contract: " + contractDeleteResult.status);
        return;
    }
    System.out.println("Contract successfully deleted");
}