Differences between Runtime/Checked/Unchecked/Error/Exception

Question

What are the Runtime exceptions and what are Checked/Unchecked Exceptions and difference between Error/Exception.Why these many types? Instead Java may simply follow a simpl

Answer 1

Exceptions are two types in java:

1. **Checked Exception: The exceptions which are checked by compiler. 

For example: we you are performing operation with file, then compiler will ask you to handle IOException either by try-catch block or throws keyword.

2. Unchecked Exception: The exceptions which are not checked by compiler at run time. 

For example: If you are performing operation on an object without creating it; in this case you'll get NullPointerException.