tabase Database in which to look up the user
* @param username Username specified on the logon form
*
* @exception ModuleException if a business logic rule is violated
*/
public User getUser(UserDatabase database, String username)
throws ModuleException {
// Force an ArithmeticException which can be handled explicitly
if ("arithmetic".equals(username)) {
throw new ArithmeticException();
}
// Force an application-specific exception which can be handled
if ("expired".equals(username)) {
throw new ExpiredPasswordException(username);
}
// Look up and return the specified user
return ((User) database.findUser(username));
}
}
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