java以太坊开发 - web3j使用钱包进行转帐

首先载入钱包，而后利用帐户凭证操做受控交易Transfer进行转帐：

Web3j web3 = Web3j.build(new HttpService());  // defaults to http://localhost:8545/
Credentials credentials = WalletUtils.loadCredentials("password", "/path/to/walletfile");
TransactionReceipt transactionReceipt = Transfer.sendFunds(
        web3, credentials, "0x<address>|<ensName>",
        BigDecimal.valueOf(1.0), Convert.Unit.ETHER)
        .send();

详细讲解请参考教程web3j以太坊开发详解。