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Comparison of Regular Expression jdk1.4 vs Jakarta

Source: Internet
Author: User
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The result is unexpected. 19 data records are retrieved from several hundred bytes of messages. The result is as follows:
JDK Jakarta
Cache Formula 0.2 s 0.4 s
No cache Formula 0.6 s 1.1 s
Thread Security Not Guaranteed

In addition, it proves that multithreading must be fast.
The regular expression is executed 1000 times per 40 threads, and the result is two seconds slower than the simple execution 40 thousand times. Is it necessary to show the advantage on multiple CPU machines?

Tomorrow's Teacher's Day, I wish all teachers a happy holiday, less red packets, teaching and educating people.

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Related Keywords:
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