String ethereumUrl = "http://localhost:8545";
String username = "username";
String password = "password";
EthereumConnection connection = DriverManager.getConnection(ethereumUrl, username, password);
String query = "SELECT balance FROM accounts WHERE address = '0x123456789abcdef'";
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery(query);
if (resultSet.next()) {
BigInteger balance = resultSet.getBigInteger("balance");
System.out.println("Account balance: " + balance);
}
connection.setAutoCommit(false);
connection.commit();
EthereumEventListener listener = new EthereumEventListener() {
@Override
public void onEvent(EthereumEvent event) {
}
};
connection.addEventListener(listener);
