Java Reference
In-Depth Information
The
getRootCause()
method returns a
Throwable
object representing the cause of the excep-
tion.
getRootCause()
has no parameters and throws no exceptions.
It returns this value:
•
java.lang.Throwable
The
UnavailableException
An
UnavailableException
is thrown when a servlet is not available to service a request. The
two types of
UnavailableException
s are permanent and temporary.
When a servlet is permanently unavailable, the servlet will not be able to service requests until
some administrative task is completed.
When a servlet is temporarily unavailable, the servlet is expected to be able to service requests
within a given period of time.
The
UnavailableException(java.lang.String msg, int seconds)
Constructor
public UnavailableException(java.lang.String msg, int seconds)
This constructor creates an
UnavailableException()
with an
int
value, representing a esti-
mated time of unavailability. It also receives a reference to a
String
representing the error
message.
It has two parameters:
•
java.lang.String
•
int
The
UnavailableException(java.lang.String msg)
Method
public UnavailableException(java.lang.String msg)
This constructor creates an
UnavailableException()
with a
String
representing the error
message. This constructor create an
UnavailableException()
, denoting permanent unavail-
ability
It has one parameter:
•
java.lang.String
The
isPermanent()
Method
public boolean isPermanent()
