How to find the Strings within a text file in Java?

Following Java program accepts a String value from the user, verifies whether a file contains the given String and prints the number of occurrences of the word too.


 Live Demo

import java.util.Scanner;
public class FindingWordFromFile {
   public static void main(String args[]) throws FileNotFoundException {
      //Reading the word to be found from the user
      Scanner sc1 = new Scanner(;
      System.out.println("Enter the word to be found");
      String word =;
      boolean flag = false;
      int count = 0;
      System.out.println("Contents of the line");
      //Reading the contents of the file
      Scanner sc2 = new Scanner(new FileInputStream("D:\sampleData.txt"));
      while(sc2.hasNextLine()) {
         String line = sc2.nextLine();
         if(line.indexOf(word)!=-1) {
            flag = true;
            count = count+1;
      if(flag) {
         System.out.println("File contains the specified word");
         System.out.println("Number of occurrences is: "+count);
      } else {
         System.out.println("File does not contain the specified word");


Enter the word to be found
Contents of the line
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File contains the specified word
Number of occurrences is: 3

Updated on: 10-Sep-2019

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