Disable warning in IntelliJ for one line

Expanding upon Ryan Stewart's answer, in IntelliJ, use Alt+Enter, then select the first sub-menu, then the last item: Suppress for statement.

Update

Using IntelliJ IDEA 13, I noticed an additional menu item: "Suppress for statement with comment". This will use the IntelliJ style //noinspection unchecked. If you select "Suppress for statement", IntelliJ will insert this text: @SuppressWarnings("unchecked").

Mostly in IntelliJ, you can click on the line and Alt+Enter, and it will have options for suppressing the warning, among other things.