How to write a regular expression to remove all alphaberical characters from a String

Question

How to remove all alphabetical characters from a string usign a regular expression in java/android?

val = val.replaceAll("/A/z","");

Answer 1

Try this:

replaceAll("[a-z]", "");

Also have a look here:

Replace all characters not in range (Java String)

Answer 2

Have a look into Unicode properites:

\p{L} any kind of letter from any language

So your regex would look like this

val = val.replaceAll("\\p{L}+","");

To remove also combined letters use a character class and add \p{M}

\p{M} a character intended to be combined with another character (e.g. accents, umlauts, enclosing boxes, etc.)

Then you end here:

val = val.replaceAll("[\\p{L}\\p{M}]+","");

Answer 3

This will remove all alphabetical characters

    String text = "gdgddfgdfh123.0114cc";
    String numOnly = text.replaceAll("\\p{Alpha}","");