Code Recipes Blog

In this post under Apache Commons IO, I will show with example how to read a file and ignore the contents that we have read.

In Apache Commons IO framework, we have static utility class “IOUtils”, which has a method “consume” which reads a file and ignore the contents that it has read.

Below is the complete main code for your reference

Main class

1  package ioutils;
2  
3  import org.apache.commons.io.IOUtils;
4  
5  import java.io.File;
6  import java.io.FileReader;
7  import java.io.IOException;
8  
9  public class Example1 {
10     public static void main(String[] args) throws IOException  {
11         File file = new File("Quotes.txt");
12         try(FileReader fileReader = new FileReader(file)) {
13             IOUtils.consume(fileReader);
14         }
15     }
16 }

In the above code, at line 11, I create a “File” instance.

At line 12, within try-with-resource block, I am creating an instance of “FileReader” using the “file” object as constructor argument.

Then at line 13, I call “IOUtils” class static method “consume” and pass the “FileReader” instance as a method argument.

That is all we have to do.

The method “consume” reads the file contents and ignores whatever it has read.

In this way, we can read a file and at the same time ignore whatever is read.