How to check whether a file exists or not in Java

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If I want to read a file and write the data into it, but how to check if the file exists or not?
Apr 18, 2018 in Java by Parth
• 4,630 points
3,515 views

3 answers to this question.

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To check whether the file exists or not, we have to import io package. And from this package, we have to import File Class.

import java.io.File;

File f = new File(filePathString); //filepath will be the directory path where you want to search a file
if(f.exists() && !f.isDirectory()) {
    System.out.println("File exists");
}
answered Apr 18, 2018 by Daisy
• 8,120 points
0 votes

Instead of using exists(), we can use isFile() because, will return true but will not allow you to open and read from it as a file.

new File("path/to/file.txt").isFile();
answered Jul 20, 2018 by Sushmita
• 6,910 points
0 votes

Using nio we can check whether file exists or not.

import java.nio.file.*;

Path path = Paths.get(filePathString);

if (Files.exists(path)) {
  // file exist
}

if (Files.notExists(path)) {
  // file is not exist
}
answered Aug 14, 2018 by Sushmita
• 6,910 points

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