This is an example of how to count the words of a String paragraph, using theorg.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 thecountMatches method ofStringUtils 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 paragraphString 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 searchString string = "Java";// Count word repetitionsint counter = StringUtils.countMatches(paragraph, string);// Print the resultSystem.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.

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