info("Deployed contract at " + excelStorageContractHttp. Transactions are a formal action on a blockchain. 3. transactionHash)} catch (e: Exception) {Log. So, how can I sign erc20 token transaction and perform the transaction using web3j in java. . Signed transactions can be simple value transfers, contract creation, or contract invocation. utils. . gradle file and then add web3j as a dependency to your application build. Ethereum Mainnet Connect wallet. . . Create an Alchemy Key To use Alchemy's products, you need an API key to authenticate your requests.
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