use list( ) to examine the contents of a directory:

        

import java.io.File;
   
class DirList {
  public static void main(String args[]) {
    String dirname = "/java";
    File f1 = new File(dirname);
   
    if (f1.isDirectory()) {
      System.out.println("Directory of " + dirname);
      String s[] = f1.list();
   
      for (int i=0; i < s.length; i++) {
        File f = new File(dirname + "/" + s[i]);
        if (f.isDirectory()) {
          System.out.println(s[i] + " is a directory");
        } else {
          System.out.println(s[i] + " is a file");
        }
      }
    } else {
      System.out.println(dirname + " is not a directory");
    }
  }
}

Related examples in the same category

1.	Create directory
2.	Create directory along with required nonexistent parent directories
3.	Create directory tree (nested/cascade folders)
4.	Create a directories recursively
5.	Copying a Directory: Copies files under srcDir to dstDir, if dstDir does not exist, it will be created.
6.	Delete a non-empty directory: Deletes all files and subdirectories under dir.
7.	Listing the Files or Subdirectories in a Directory
8.	Listing the File System Roots
9.	The Directory Listing Application
10.	Reading and Printing a Directory Hierarchy
11.	Display a file system in a JTree view
12.	File Tree Demo
13.	File Table HTML
14.	A standalone program that deletes a specified file or directory
15.	Get Last modification time of a file or directory
16.	Set last modified time of a file or directory
17.	List contents of a directory
18.	Determine if file or directory exists
19.	Determine if File or Directory is hidden
20.	Check if a directory is not empty
21.	Get name of parent directory
22.	Get name of specified file or directory
23.	Get current directory
24.	Mark file or directory Read Only
25.	Rename file or directory
26.	Traversing all files and directories under dir
27.	Traversing only directories under dir
28.	Traversing only files under dir
29.	Creates and displays a window containing a list of files and sub-directories in a specified directory
30.	Calculate directory size
31.	Delete directory recursively
32.	Determining If Two Filename Paths Refer to the Same File
33.	Recursive directory deletion
34.	Recursivly delete directory
35.	Searches through the directory tree
36.	Starts at the directory given and tests to see whether it is empty
37.	Directory Walker
38.	Utility methods for handling files and directories
39.	Creates a new and empty directory in the default temp directory using the given prefix.
40.	Count files in a directory (including files in all subdirectories)
41.	Create a unique directory within a directory 'root'
42.	Creates a new empty temporary directory.
43.	Get Files Recurse
44.	Recursively search a directory tree
45.	Find directories

use list( ) to examine the contents of a directory: : Directory « File Input Output « Java

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