Ignore certain characters from a character set in regex

Asked Apr 11 '18 at 18:40

Active Apr 11 '18 at 18:43

Viewed 83 times

I have the following code which replaces control characters:

String str = "Apple\n"
                + "\n"
                + "\n"
                + "\n"
                + "> --"
                + "\n"
                + "\n"
                + "Mango\n"
                + "\n"
                + "\n"
                + "Kiwi\n"
                + "Papaya\n"
                + "\n"
                + "Orange\n";

str = str.replaceAll("(?m)((^[\\p{C}]*)|([\\p{C}]*$))", "");

I want to remove all control characters except the new line (\n) from the start of the line and the end of the line. The problem I am having in that \n is a part of \\p{C} set. How do I modify this regex to ensure it replaces all characters except the \n character.

edited Apr 11 '18 at 18:43

asked Apr 11 '18 at 18:40

Raqib

1,367
11
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2

Using Java `[\p{C}&&[^\n]]` – revo Apr 11 '18 at 18:42
@anubhava OP only wanted to keep ``\n``, not ``\r``, and why did you double ``\`` on one ``\\n`` but not the other? Consistency is good when coding. – Andreas Apr 11 '18 at 18:46

Ignore certain characters from a character set in regex

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