java string regex -

Can anyone help me with a piece of regex? I want to stop the user from entering any charger other than az or a hyphen -

Hope someone can help me

thanks

You can use regex: ^ [az-] $

• ^ : Start anchor
• $ : and anchor
• [..] : four squares
• az : any lowercase alphabet
• - : a lexical hyphen hyphen usually in four squares A mate Character is, but if the four classes before or last in the form of characters, it is literally behavior.
• + : Quantifier for one or more

If you want to allow the empty string, then you + with * >