spring-security/samples/tutorial-xml/src/main/java/bigbank/BankService.java

package bigbank;

import org.springframework.security.access.prepost.PreAuthorize;

public interface BankService {

	public Account readAccount(Long id);

	public Account[] findAccounts();

	@PreAuthorize("hasRole('supervisor') or "
			+ "hasRole('teller') and (#account.balance + #amount >= -#account.overdraft)")
	public Account post(Account account, double amount);
}