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Java Java Objects Creating the MVP Prompting for Guesses

Wojciech Lisowski
Wojciech Lisowski
3,093 Points
Posted by Wojciech Lisowski
Wojciech Lisowski
3,093 Points

i do not understand why at the end of the line is -1. boolean isHit = answer.indexOf(letter)!=-1;

i make program java obejct Scrrable: boolean isHit = answer.indexOf(letter)!=-1; why -1?

1 Answer

Matthew S
Matthew S
8,626 Points
Matthew S
Matthew S
8,626 Points

An index is considered a number starting from 0 as the first index and onwards. -1 is an index that doesn't exist, so "!=-1" means if the index does not equal to not existing (hope that makes sense)