Hi,

You can use FileUtils class from commons-io to read whole text file into a string.

First all add add following dependency in your pom.xml file if you are using maven:

<dependency>
  <groupId>commons-io</groupId>
  <artifactId>commons-io</artifactId>
  <version>2.18.0</version>
</dependency>

Maven will download required jar files in your project. You can use:

String str = FileUtils.
          readFileToString(new File(fileName), "utf-8");

to read file into string. Here is full code:

package net.roseindia;

import java.io.File;

import org.apache.commons.io.FileUtils;

public class ReadWholeTextFileUsingFileUtils {

    public static void main(String[] args) {
        String fileName = "data.txt";
        try {
            String str = FileUtils.
                    readFileToString(new File(fileName), "utf-8");
            System.out.println(str);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}

Thanks