How do I check if a file exists in Java

Question

If possible I'd prefer a real API call returning true/false as opposed to some "Call API to open a file and catch when it throws an exception which you check for 'no file' in the text", but I can live with the latter.

Answer 1

Using java.io.File:

File f = new File(filePathString);
if(f.exists() && !f.isDirectory()) { 
    // do something
}

Answer 2

To test to see if a file or directory exists, use the exists method of the Java File class, as shown in this example:

File tmpDir = new File("/var/tmp");
boolean exists = tmpDir.exists();

The existing method of the Java File class returns true if the file or directory exists, and false otherwise.

Answer 3

The exists() function is a part of File class in Java . This function determines whether the is a file or directory denoted by the abstract filename exists or not.The function returns true if the abstract file path exists or else returns false.

Function signature:

public boolean exists()

Syntax:

file.exists()

// Java program to demonstrate // exists() method of File Class    import java.io.*; public class solution { public static void main(String args[]) { // Get the file File f = new File("F:\\program.txt"); // Check if the specified file // Exists or not if (f.exists()) System.out.println("Exists"); else System.out.println("Does not Exists"); } }

Output:

Exists

Answer 4

To test to see if a file or directory exists, use the “exists()” method of the Java java.io.File class, as shown here:

File tempFile = new File("c:/temp/temp.txt"); boolean exists = tempFile.exists();

If above method returns true then file or directory does exist, and otherwise does not exists.

Check file exist with exists() method

import java.io.File; import java.io.IOException; public class TemporaryFileExample { public static void main(String[] args) { File temp; try { temp = File.createTempFile("myTempFile", ".txt"); boolean exists = temp.exists(); System.out.println("Temp file exists : " + exists); } catch (IOException e) { e.printStackTrace(); } } }

Program Output.

Console

Temp file exists : true