Hidden Traps in Regular Expressions

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2 pointsCrditeJh_Lan2 comments

TLDR: Poorly written regexp causes performance problems:

/^([hH][tT]{2}[pP]://|[hH][tT]{2}[pP][sS]://)(([A-Za-z0-9-~]+).)+([A-Za-z0-9-~\\\\/])+$/

instead of /(https?:.../i

I’m sure there exists proper java libraries to parse an URL.

java.net.URL please.