Java Ice Breakers

How to find the duplicate words in a sentence using Collections class

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by

anagendrakumar2020
in ,

Find the duplicate words in a given sentence of strings using the frequency method of the Collections class. This is the third possible solution to solve this problem. 

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

public class DuplicatewordsUsingFrequency {

	public static void main(String args[]) {

		Scanner inpStr = new Scanner(System.in);
		System.out.println("Enter an input sentence");
		String sentence = inpStr.nextLine();
		//split the given sentence using space delimiter and storing into List collection
		List<String> words=Arrays.asList(sentence.split(" "));

		Set<String> IndividualWords=new HashSet<String>(words);
		//Traversing the words list for from each word in the IndividualWords set to check for more occurrences
		for(String eachWord: IndividualWords) {
			if (Collections.frequency(words, eachWord) > 1)
				System.out.println("The word="+eachWord+" repeated "+Collections.frequency(words, eachWord)+" times");
		}
		inpStr.close();
	}
}
Try it >>
Enter an input sentence
 This example shows that This example, This example repeated
 The word=This repeated 3 times
 The word=example repeated 2 times

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