What is the use of Pattern.quote method?

Question

I\'m trying to understand Pattern.quote using the following code:

String pattern = Pattern.quote("1252343% 8 567 hdfg gf^$545");
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Answer 1

Regex collides frequently with normal strings. Say I want a regex to search for a certain string that is only known at runtime. How can we be sure that the string doesn't have regex meaning eg(".*.*.*")? We quote it.