Word counter

This is an example of how to count the words of a String paragraph, using the org.apache.commons.lang3.StringUtils class. This class provides operations on String that are null safe. Counting the words of a paragraph implies that you should:

• Create a String that is a paragraph.
• Create a String word that is the word to search in the paragraph.
• Use the countMatches method of StringUtils method that counts the number of occurrences of one String in another.

Let’s take a look at the code snippet that follows:  

package com.javacodegeeks.snippets.core;

import org.apache.commons.lang3.StringUtils;

public class WordCounter {
	
	public static void main(String[] args) {
		
		// String with our paragraph
		String paragraph = "Java Code Geeks (JCGs) is an independent online community focused on creating the" 
		+ "ultimate Java-to-Java developers resource center; targeted at the technical architect, technical" 
	    + "team lead (senior developer), project manager and junior developers alike. JCGs serve the Java, "
		+ "Scala, Android, SOA, Agile and Telecom communities with daily news written by domain experts, "
	    + "articles, tutorials, reviews, announcements, code snippets and open source projects.";
		
		// Declare the word you want to search
		String string = "Java";

		// Count word repetitions
		int counter = StringUtils.countMatches(paragraph, string);

		// Print the result
		System.out.println("Word <" + string + "> appeared " + counter + " times in the paragraph.");
	}
}

Output:

Word <Java> appeared 4 times in the paragraph.

  
This was an example of a word counter in Java.