Java File Extension Name Extract getFileExtension(File file)

Description

get File Extension

License

Open Source License

Declaration

public static String getFileExtension(File file) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.File;

public class Main {

    public static String getFileExtension(File file) {

        String filename = file.getName().trim().toLowerCase();
        if (filename.length() == 0)
            return "";
        if (filename.charAt(filename.length() - 1) == '.')
            filename = filename.substring(0, filename.length() - 1);

        int lastPointIndex = filename.lastIndexOf('.');
        if (lastPointIndex < 0)
            return "";
        else//from w  w w . j a v a2s . c  o m
            return filename.substring(lastPointIndex + 1, filename.length());
    }
}

Related

1. extractFileExtension(String filename)
2. extractFileExtension(String filePath)
3. extractFileExtension(String path)
4. extractFileExtensionFromPath(String path)
5. getFileExtension(File f)
6. getFileExtension(File file)
7. getFileExtension(File file)
8. getFileExtension(File file)
9. getFileExtension(File file)