Throw an IllegalStateException:
Signals that a method has been invoked
at an illegal or inappropriate time.
In other words, the Java environment
or Java application is not in an
appropriate state for the requested
operation.
Throw an IllegalStateException:
Signals that a method has been invoked
at an illegal or inappropriate time.
In other words, the Java environment
or Java application is not in an
appropriate state for the requested
operation.