Item 60 - Favor the use of standard exceptions
Benefits
- It makes your API easier to learn and use because it matches established conventions with which programmers are already familiar
- Programs using your API are easier to read because they aren’t cluttered with unfamiliar exceptions
- Fewer exception classes mean a smaller memory footprint and less time spent loading classes
| Exception |
Occasion for Use |
| IllegalArgumentException |
Non-null parameter value is inappropriate |
| IllegalStateException |
Object state is inappropriate for method invocation |
| NullPointerException |
Parameter value is null where prohibited |
| IndexOutOfBoundsException |
Index parameter value is out of range |
| ConcurrentModificationException |
Concurrent modification of an object has been detected where it is prohibited |
| UnsupportedOperationException |
Object does not support method |
