Java - Get specific files by extensions from a specified folder

Last update on May 19 2025 13:14:10 (UTC/GMT +8 hours)

2. Get Files by Extension

Write a Java program to get specific files with extensions from a specified folder.

Sample Solution:

Java Code:

import java.io.File;
import java.io.FilenameFilter;
public class Exercise2 {
       public static void main(String a[]){
        File file = new File("/home/students/");
           String[] list = file.list(new FilenameFilter() {
           @Override
            public boolean accept(File dir, String name) {
             if(name.toLowerCase().endsWith(".py")){
                    return true;
                } else {
                    return false;
                }
            }
        });
        for(String f:list){
            System.out.println(f);
        }
    }
}

Sample Output:

abc.py

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to list all files with a given extension from a folder, ignoring case sensitivity.
• Write a Java program to filter files by multiple extensions from a specified directory using Java streams.
• Write a Java program to search for files with a specific extension and sort them by file size in ascending order.
• Write a Java program to recursively find all files with a particular extension within nested directories.

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Java Code Editor:

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