 | Types of Exceptions
 | Checked Exceptions
| extend Exception |
| MUST be either |
| explicitly caught by a surrounding catch block |
| explicitly declared as a checked exception via
the throws clause |
|
| Unchecked Exceptions
| extend RuntimeException |
| DOES NOT need an explicit catch block or throws
clause |
|
|
| throw
| "How you raise exceptions" |
| Throw only classes of type Throwable - Exceptions extend
Throwable |
| throw new java.io.IOException(); |
|
| try, catch, finally
| try blocks - "How you define the block of code
where exceptions are 'watched for'" |
| catch clauses - "After an exception is thrown in a
try block, determine how to deal with it" |
| finally clause - "After the try block is complete,
run this no matter what/how" |
|
| Example
try {
//
//code that could throws IOException, among other exceptions
//
} catch (IOException e) {
//handle IOException
} catch (Exception ee) {
//catch any exception
} finally {
//clean up after the try block
}
|
