'How to formate or validate date in java like 20992012 or 12122022? [duplicate]

i have to validate date

yyyyMMdd or MMddyyyy or ddMMyyyy.

if i pass input 20221224, ho to make this is valid? but how can i do this in regex or normal? Can we do this in regex?

How to identify whether this yyyyMMdd or MMddyyyy or ddMMyyyy?

Kindly share your inputs
javaregexdatesimpledateformat


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