AccountsRetrieval.java

Statement statement = connection.createStatement()) {
List<BankAccount> accountList = new ArrayList<>();
ResultSet resultSet = statement.executeQuery("SELECT * FROM accounts");
while (resultSet.next()) {
    BankAccount bankAccount = new BankAccount();
    bankAccount.setBalance(resultSet.getBigDecimal("balance"));
    bankAccount.setOwner(resultSet.getString("owner"));
    accountList.add(bankAccount);
}
return accountList;