Java Reference
In-Depth Information
Exceptional Handling
It is a drawback that affects the performance of java program because it can occur at any
point. It occurrence is at execution state.
Reasons
•
Invalid data
•
File absent
•
Loss of network connection and time out when the JVM is at run.
The common exceptions are.
Checked-
These exceptions cannot be forecasted by the programmer and it cannot be even
ignored during.
Runtime-
This is a dynamic exception, but it can be ignored unlike the checked one.
Errors-
These are also ignored because nothing can be done to overcome it and this is not
under programmer's control.
Exception hierarchy
It has two sub divisions: Input output exception classes and runtime exception class.
Throw
These are exceptions which are thrown by JVM during runtime.
