Java File Extension Name Get getFileExtension(String fileName)

Description

Get File extension (result will NOT include ".")

License

Open Source License

Parameter

Parameter	Description
fileName	a parameter

Return

String file extension value, or "" is no extension

Declaration

public static String getFileExtension(String fileName) 

Method Source Code

//package com.java2s;
/*//from w  ww  . j  av  a2s  .  c om
 * Copyright (c) 2012 Diamond Light Source Ltd.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */

import java.io.File;

public class Main {
    /**
     * Get File extension (result will NOT include ".")
     * 
     * @param fileName
     * @return String file extension value, or "" is no extension
     */
    public static String getFileExtension(String fileName) {
        int posExt = fileName.lastIndexOf(".");
        // No File Extension
        return posExt == -1 ? "" : fileName.substring(posExt + 1);
    }

    /**
     * Get File extension (result will NOT include ".")
     * 
     * @param file
     * @return String file extension value, or "" is no extension
     */
    public static String getFileExtension(File file) {
        return getFileExtension(file.getName());
    }
}

Related

1. getFileExtension(String file)
2. getFileExtension(String filename)
3. getFileExtension(String fileName)
4. getFileExtension(String filename)
5. getFileExtension(String fileName)
6. getFileExtension(String fileName)
7. getFileExtension(String filePath)
8. getFileExtension(String filePath)
9. getFileExtension(String filePath)