How does one write a regular expression in java that will match all strings

Question

Editorial Team

Asked: June 10, 20262026-06-10T05:56:36+00:00 2026-06-10T05:56:36+00:00

How does one write a regular expression in java that will match all strings without the character code zero?

I’ve tried:

Pattern.compile ("[^\0]");

and

Pattern.compile ("[^\u0000]");

Thanks.

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Editorial Team · Answer 1 · 2026-06-10T05:56:37+00:00

Editorial Team

Your first regex is almost right, but it only matches a single character that is not \0. Try changing it to:

Pattern.compile ("[^\0]+");

This should match one-or-more (+) characters that are not \0.

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