What's the difference b/w next() and hasNext()?

[jamesgo]

if the query has only one match, will hasNext() return true?

[Anurag Tripathi]

Hi,

hasNext() just checked whether the query has return records or not , just a boolean return.

next() actually does moves the pointer to the first to next record in the iteration.

[Tanushree Maiti]

next ()  - we use when iterate in a loop and moves to the next record.

              - Its return True (Boolean) - if successfully iterate to next record ( e.g post queried on GlideRecord)

             - Typically used under While condition.

hasNext() - we use when we want to check whether next record exists or not.

                     Its return True(Boolean) - Next record exists.

                     Use under IF condition.