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  • Java
  • Java Read Files

Read a File

In the previous chapter, you learned how to create and write to a file.

In the following example, we use the Scanner class to read the contents of the text file we created in the previous chapter:

Example

import java.io.File;  // Import the File class

import java.io.FileNotFoundException;  // Import this class to handle errors

import java.util.Scanner; // Import the Scanner class to read text files

 

public class ReadFile {

  public static void main(String[] args) {

    try {

      File myObj = new File("filename.txt");

      Scanner myReader = new Scanner(myObj);

      while (myReader.hasNextLine()) {

        String data = myReader.nextLine();

        System.out.println(data);

      }

      myReader.close();

    } catch (FileNotFoundException e) {

      System.out.println("An error occurred.");

      e.printStackTrace();

    }

  }

}

The output will be:

Files in Java might be tricky, but it is fun enough!

 

Get File Information

To get more information about a file, use any of the File methods:

Example

import java.io.File;  // Import the File class

 

public class GetFileInfo {
  public static void main(String[] args) {

    File myObj = new File("filename.txt");

    if (myObj.exists()) {

      System.out.println("File name: " + myObj.getName());

      System.

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