java.io.File isFile()

Description

On this document we will be showing a java example on how to use the isFile() method of File Class. This method tests whether the file denoted by this abstract pathname is a normal file. A file is normal if it is not a directory and, in addition, satisfies other system-dependent criteria. Any non-directory file created by a Java application is guaranteed to be a normal file.

Where it is required to distinguish an I/O exception from the case that the file is not a normal file, or where several attributes of the same file are required at the same time, then the Files.readAttributes method may be used.

Throws:

SecurityException – If a security manager exists and its SecurityManager.checkRead(java.lang.String) method denies read access to the file.

Method Syntax

public boolean isFile()

Method Argument

Data Type Parameter Description
N/A N/A N/A

Method Returns

This method returns a boolean, true if and only if the file denoted by this abstract pathname exists and is a normal file; false otherwise.

Compatibility

Requires Java 1.0 and up

Java File isFile() Example

Below is a java code demonstrates the use of isFile() method of File class. The example presented might be simple however it shows the behaviour of the isFile() method of File class. We put a check if the file is a file or not using isFile() method, the result is evaluated and if it is a file, the contents are printed out using the Scanner class.

package com.javatutorialhq.java.examples;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

/*
 * This example source code demonstrates the use of  
 * isFile() method of File class.
 * 
 */

public class FileIsFileExample {

	public static void main(String[] args) {

		// initialize File object
		File file = new File("C:javatutorialhqinputtest_file.txt");
		// check if it is a file
		boolean result = file.isFile();
		if (result) {
			// read the contents of the file
			try {
				Scanner s = new Scanner(file);
				while(s.hasNextLine()){
					System.out.println(s.nextLine());
				}
				s.close();
			} catch (FileNotFoundException e) {
				e.printStackTrace();
			}
		}

	}
}

Sample Output

Below is the sample output when you run the above example.

java lang File isFile() example output