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Java regex validate alphabets

Regular expression to accept only alphabets

[a-zA-Z]+\.?

This regular expression refers to a pattern which accepts alphabets only.

Example

package com.codesjava;
 
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class RegexTest {
	private static final String PATTERN = "[a-zA-Z]+\.?";
	public static void main(String args[]){ 
		List<String> values = new ArrayList<String>();	       
		values.add("Jai"); 
		values.add("Jai5"); 
		values.add("12345");
 
		Pattern pattern = Pattern.compile(PATTERN);
		for (String value : values){
		  Matcher matcher = pattern.matcher(value);
		  System.out.println(matcher.matches());
		}
	}
}

Output

true
false
false
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