Count All Words

Count a group of words

It is another use case for us, In this scenario we don’t provide any Starting and ending boundaries for pattern matching. And also we need change the regex also. Reaming is same as explained in the above and again I take String value but I change regex for this use case I will provide in the below.

Required Regex

"\\b\\w+\\b"

Example

In this example I write java code for count all the words from the given String and display the result.

Java

// Java Program to Count All Words in a String 
  
import java.util.regex.Matcher; 
import java.util.regex.Pattern; 
  
public class AllWordCountExample { 
    public static void main(String[] args) { 
        // Input string 
        String inputString = "Welcome to w3wiki Best Online Platform for" + 
          " learning Computer Science Subjects"; 
  
        // Regular expression to match words 
        String wordRegex = "\\b\\w+\\b"; 
  
        // Create a Pattern object 
        Pattern pattern = Pattern.compile(wordRegex); 
  
        // Create a Matcher object 
        Matcher matcher = pattern.matcher(inputString); 
  
        // Count the number of words 
        int wordCount = 0; 
        while (matcher.find()) { 
            wordCount++; 
        } 
  
        // Display the result 
        System.out.println("Number of words in the string: " + wordCount); 
    } 
} 

Output

Count a Group of Words in a String Using Regex in Java

Regular Expression is a powerful approach in Java for searching, Manipulating, and matching patterns with specific pattern requirements. In this article, we will learn to count a group of words in a string using regex.

First I explain count a group of words in a string using regex as per requirement, After that I will explain how to count all words in a given String by using regex.

Tags:

#Java Examples #java-regular-expression #regular-expression #Java #Java Programs #Java