java - Regex pattern for "contains not only spaces"

Question

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

Please tell me which pattern I need to use if field must not contain only spaces.

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1 Answer

深蓝 · Answer 1 · 2021-10-23T19:25:02+0000

answered Oct 24, 2021 by 深蓝 (71.8m points)

Why need to use regex?

str.trim().isEmpty()

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