How do you use try clause and catch clause in Java?

Answer 1

The try is used to define a block of code in which exceptions may occur. This block of code is called a guarded region (which really means "risky code goes here"). One or more catch clauses match a specific exception to a block of code that handles it. Here's how it looks in pseudocode:

1. try {

2. // This is the "guarded region"

3. // All your bank database access code goes here

4. // And any other code that might process that data

5. // We may have many code lines here

6. }

7. catch(DatabaseDownException) {

8. // Put code here that handles this exception.

9. // Put the graceful error message here

10. // This is the last line of the exception handler.

11. }

12. catch(SomeOtherException) {

13. // Put code here that handles this exception

14. }

15.

16. // Some other unguarded code continues from here