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Extracting each word from a String using Regex in Java

Last Updated : 23 Jul, 2025

Given a string, extract words from it. "Words" are defined as contiguous strings of alphabetic characters i.e. any upper or lower case characters a-z or A-Z. Examples:

Input : Funny?? are not you?
Output : Funny
         are
         not
         you

Input : Geeks for geeks?? 
Output : Geeks
         for
         geeks

We have discussed a solution for C++ in this post :

We have also discussed basic approach for java in these posts :

and

. In this post, we will discuss

approach for doing the same. This approach is best in terms of Time Complexity and is also used for large input files. Below is the regular expression for any word.

[a-zA-Z]+

// Java program to demonstrate extracting words
// from string using Regex

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test 
{
    public static void main(String[] args) 
    {
        String s1 = "Geeks for Geeks";
        String s2 = "A Computer Science Portal for Geeks";
        
        Pattern p = Pattern.compile("[a-zA-Z]+");
        
        Matcher m1 = p.matcher(s1);
        Matcher m2 = p.matcher(s2);
        
        System.out.println("Words from string \"" + s1 + "\" : ");
        while (m1.find()) {
            System.out.println(m1.group());
        }
        
        System.out.println("Words from string \"" + s2 + "\" : ");
        while (m2.find()) {
            System.out.println(m2.group());
        }
        
    }
}

Output:

Words from string "Geeks for Geeks" : 
Geeks
for
Geeks
Words from string "A Computer Science Portal for Geeks" : 
A
Computer
Science
Portal
for
Geeks

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