Java File Name Get getFilenameSuffix(final File file)

Description

Gets the filename suffix or null if no suffix exists or the given file object is a directory.

License

Apache License

Parameter

Parameter	Description
file	the file.

Return

's the filename suffix or null if no suffix exists or the given file object is a directory.

Declaration

public static String getFilenameSuffix(final File file) 

Method Source Code

//package com.java2s;
/**//from ww  w  .j  a v a2 s.  c  o m
 * Copyright (C) 2007 Asterios Raptis
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.File;

public class Main {
    /**
     * Gets the filename suffix or null if no suffix exists or the given file object is a directory.
     * 
     * @param file
     *            the file.
     * @return 's the filename suffix or null if no suffix exists or the given file object is a
     *         directory.
     */
    public static String getFilenameSuffix(final File file) {
        if (!file.isDirectory()) {
            final String fileName = file.getAbsolutePath();
            final int ext_index = fileName.lastIndexOf(".");
            final String fileNameSuffix;
            if (ext_index != -1) {
                fileNameSuffix = fileName.substring(ext_index, fileName.length());
            } else {
                fileNameSuffix = null;
            }
            return fileNameSuffix;
        }
        return null;
    }
}

Related

1. getFileNamesFromDir(File rootDir, String indexName)
2. getFileNamesInJar(File source, String folder, String extension)
3. getFileNamesOld(File zipFile)
4. getFileNamesRecursive(final String pDataDir, final FilenameFilter pFilter, final int pMaxFiles)
5. getFileNameStartingWith(String directory, String prefix)
6. getFileNameUtil(String dataPath)
7. getFileNameWithAddedExtension(File parent, File f, String ext)
8. getFileNameWithNewExtension(File parent, File file, String ext)
9. getFilenameWithoutAnyExtension(File file)