Anyone know why this regex passes in regex101 when...

# random

[Colton Idle]

Anyone know why this regex passes in regex101 when java is selected, but doesn't work in my kotlin app? Just trying to make sure a string has both upper and lower case letters.

https://regex101.com/
(?=.*?[A-Z])(?=(.*[a-z]){1,})

[Dominaezzz]

Can you reproduce in playground?

[Colton Idle]

https://pl.kotl.in/QS3NALCE2

[Dominaezzz]

regex101 might be wrong about java

[Colton Idle]

🤯

[louiscad]

Regex 101 is set on PHP regex dialect by default IIRC, you need to switch it to Java 8 or something.

[Colton Idle]

louiscad yeah I switched it to java8 and I got that regex above.