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How to count the number of words in a text file using Java?
Read the number of words in text file
- Create a FileInputStream object by passing the required file (object) as a parameter to its constructor.
- Read the contents of the file using the read() method into a byte array.
- Insatiate a String class by passing the byte array to its constructor.
- Using split() method read the words of the String to an array.
- Create an integer variable, initialize it with 0, int the for loop for each element of the string array increment the count.
Example
import java.io.File;
import java.io.FileInputStream;
public class Sample {
public static void main(String args[]) throws Exception{
int count =0;
File file = new File("data");
FileInputStream fis = new FileInputStream(file);
byte[] bytesArray = new byte[(int)file.length()];
fis.read(bytesArray);
String s = new String(bytesArray);
String [] data = s.split(" ");
for (int i=0; i<data.length; i++) {
count++;
}
System.out.println("Number of characters in the given file are " +count);
}
}Output
Number of characters in the given String are 4
Updated on: 20-Feb-2020
5K+ Views
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