This week's book giveaway is in the Android forum.
We're giving away four copies of Android Programming: The Big Nerd Ranch Guide and have Bill Phillips & Chris Stewart on-line!
See this thread for details.
Win a copy of Android Programming: The Big Nerd Ranch Guide this week in the Android forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

Quick question on the B&S interface  RSS feed

 
Harjit Singh
Ranch Hand
Posts: 77
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi there,

The interface which the B&S uses throws some exceptions. My Database layer actually has to throw IO exceptions. How can I handle that ? Can I add those exceptions to the interface methods or shall I throw run time exceptions ?

Thanks

- Harjit
 
Alex Belisle Turcot
Ranch Hand
Posts: 516
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi,

you cannot modify the contract (your interface), so no you cannot throw your IOException.

What else then? subclass of the Exception type your Interface allows you... runtime exception... handling it at the db layer...
There are tones of threads on this subject..

The choices are not infinite, but they come down to design choices. If you search on the forum, you'll see the most common solution...
I think most of people choose to throw a runtime exception, which does not go against your contract..

Rgrds,
Alex
 
Musab Al-Rawi
Ranch Hand
Posts: 231
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
This topic has been discussed in several posts.
You search the forum, but as one of the options you can throw a RuntimeException or a subclass of RuntimeException, since the user can't do anything about it.
 
It is sorta covered in the JavaRanch Style Guide.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!