Java File Extension Name Get getFileExtension(File f)

Description

get File Extension

License

Open Source License

Parameter

Parameter	Description
f	the file

Return

the extension of f

Declaration

public static String getFileExtension(File f) 

Method Source Code

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

import java.io.File;

public class Main {
    /**/*w  w  w.j  a v a  2 s .  c  om*/
     * @param f
     *            the file
     * @return the extension of f
     */
    public static String getFileExtension(File f) {
        if (f.isFile()) {
            String name = f.getName();
            int pos = name.lastIndexOf(".");
            if (pos != -1) {
                return name.substring(pos + 1, name.length());
            }
        }

        return "";
    }
}

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