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I want regex to validate for only letters and spaces. Basically this is to validate full name. Ex: Mr Steve Collins or Steve Collins I tried this regex. "[a-zA-Z]+\.?" But didnt work. Can someone assist me please p.s. I use Java.
public static boolean validateLetters(String txt) { String regx = "[a-zA-Z]+\\.?"; Pattern pattern = Pattern.compile(regx,Pattern.CASE_INSENSITIVE); Matcher matcher = pattern.matcher(txt); return matcher.find(); } 
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We can use the regex ^[a-zA-Z]*$ to check a string for alphabets. This can be done using the matches() method of the String class, which tells whether the string matches the given regex.
In Java, "\b" is a back-space character (char 0x08 ), which when used in a regex will match a back-space literal.
You can easily trim unnecessary whitespace from the start and the end of a string or the lines in a text file by doing a regex search-and-replace. Search for ^[ \t]+ and replace with nothing to delete leading whitespace (spaces and tabs). Search for [ \t]+$ to trim trailing whitespace.
What about:
Validating names is a difficult issue, because valid names are not only consisting of the letters A-Z.
At least you should use the Unicode property for letters and add more special characters. A first approach could be e.g.:
String regx = "^[\\p{L} .'-]+$"; \\p{L} is a Unicode Character Property that matches any kind of letter from any language
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