Improve performance of StringUtils#trimWhitespace method [SPR-16766]

[spring-projects-issues]

Oleksandr Hasheniuk opened SPR-16766 and commented

Cutting whitespaces once prevents calling System#arrayCopy on every deleted char. With using String#substring method it would be called just once.

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Affects: 5.0.5

Referenced from: pull request #1805, and commits 6545cab, 5a1d7f9

[spring-projects-issues]

Juergen Hoeller commented

Good point! Merged to master now; I'll make sure to backport this to 5.0.6 as well.