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Class javax.servlet.UnavailableException
java.lang.Object
|
+----java.lang.Throwable
|
+----java.lang.Exception
|
+----javax.servlet.ServletException
|
+----javax.servlet.UnavailableException
- public class UnavailableException
- extends ServletException
This is a special kind of exception telling the server that this particular
servlet is currently not available.
It has two kinds of unavailability:
- Permanent unavailable
- This servlet is now and forever in the future unavailable.
If another class in spite of this fact asks this exception for how long it
is unavailable it returns a negative number of seconds.
(-1 as a matter of fact)
- Temporary unavailable
The servlet is currently unavailable, but will be available within
a certain number of seconds.
A class can ask the exception for that number of seconds.
- Version:
- Servlet API 2.0
-
UnavailableException(int, Servlet, String)
- Constructor for a temporary unavailable exception
-
UnavailableException(Servlet, String)
- Constructor for a permanent unavailable exception
-
getServlet()
- Gets the servlet that is unavailable
-
getUnavailableSeconds()
- Gets the number of seconds the servlet is unavailable
-
isPermanent()
- Check whether the servlet is permanently unavailable
UnavailableException
public UnavailableException(Servlet servlet,
String message)
- Constructor for a permanent unavailable exception
UnavailableException
public UnavailableException(int seconds,
Servlet servlet,
String message)
- Constructor for a temporary unavailable exception
isPermanent
public boolean isPermanent()
- Check whether the servlet is permanently unavailable
- Returns:
- whether the servlet is permanently unavailable
getServlet
public Servlet getServlet()
- Gets the servlet that is unavailable
getUnavailableSeconds
public int getUnavailableSeconds()
- Gets the number of seconds the servlet is unavailable
- Returns:
- the number of seconds. Negative if permanently unavailable
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