Fix trimming

[thomasleplus]

The trim() method returns a new trimmed string, it does not alter the current string (strings being immutable in Java).

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[abimarank]

Since Java 8 is supported, we can use like below

import java.util.Arrays;
Arrays.parallelSetAll(strArray, (i) -> strArray[i].trim());

[thomasleplus]

Good idea. Sadly I have deleted my fork so I can't modify this PR. I'll close it and submit a new one (#11710). Sorry for the inconvenience.

[per1234]

Superseded by #11710