Here you can find the source of getFileExtension(String filePath)
Parameter | Description |
---|---|
filePath | the file from which to get the extension. |
public static String getFileExtension(String filePath)
//package com.java2s; /*/*from w w w. j a v a2 s . c o m*/ * JPPF. * Copyright (C) 2005-2010 JPPF Team. * http://www.jppf.org * * 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.*; public class Main { /** * Get the extension of a file. * @param filePath the file from which to get the extension. * @return the file extension, or null if it si not a file or does not have an extension. */ public static String getFileExtension(String filePath) { return getFileExtension(new File(filePath)); } /** * Get the extension of a file. * @param file the file from which to get the extension. * @return the file extension, or null if it si not a file or does not have an extension. */ public static String getFileExtension(File file) { if ((file == null) || !file.exists() || !file.isFile()) return null; String filePath = file.getPath(); int idx = filePath.lastIndexOf("."); if (idx >= 0) return filePath.substring(idx + 1); return null; } }