java.io.File isDirectory()
Description
Where it is required to distinguish an I/O exception from the case that the file is not a directory, 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 isDirectory()
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 directory; false otherwise.
Compatibility
Requires Java 1.0 and up
Java File isDirectory() Example
Below is a java code demonstrates the use of isDirectory() method of File class. The example presented might be simple however it shows the behaviour of the isDirectory() method of File class. We put a check if the file is a directory or not using isDirectory() method. If the result is true, we print all the filename inside the directory.
package com.javatutorialhq.java.examples;
import java.io.File;
/*
* This example source code demonstrates the use of
* isDirectory() method of File class.
*
*/
public class FileIsDirectoryExample {
public static void main(String[] args) {
// initialize File object
File file = new File("C:javatutorialhqinput");
// check if the file is a directory
boolean result = file.isDirectory();
if (result) {
System.out.println(file.getAbsolutePath() + " is a directory");
System.out.println("***** Listing all files on the directory *****");
// listing the files
String[] list = file.list();
for (String s : list) {
System.out.println(s);
}
}
}
}
Sample Output
Below is the sample output when you run the above example.
