Retrieve PasswordExpirationDate from Central Management Server using Java

[sathya anu]

I am very new to the CMC(Central Management Console). CMC uses CMS server. Through Java I need to retrieve password expiration date from CMC.
In the CMC,BusinessObjects Enterprise password expiration rules has been set on the Enterprise tab.

In the Java class, the BO oject returns like this.

String cmsName = "localhost";
String authType = "secEnterprise";
IEnterpriseSession boEnterpriseSession = null;
IInfoStore boInfoStore = null;

boEnterpriseSession = CrystalEnterprise.getSessionMgr().logon(username, password, cmsName, authType);
String query = "SELECT * FROM CI_SYSTEMOBJECTS WHERE SI_ID=" + userId;
IInfoObjects boInfoObjects = (IInfoObjects) boInfoStore.query(query);
IUser boUser = (IUser) boInfoObjects.get(0);

My Question is How should I get the Password Expiration Date from the boUser Object?