Here you can find the source of getAudioDuration(final URI wavFile)
public static double getAudioDuration(final URI wavFile) throws MalformedURLException, UnsupportedAudioFileException, IOException
//package com.java2s; /*//from ww w .j a va 2 s . c o m * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.net.URI; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.UnsupportedAudioFileException; public class Main { public static double getAudioDuration(final URI wavFile) throws MalformedURLException, UnsupportedAudioFileException, IOException { return getAudioDuration(new File(wavFile)); } public static double getAudioDuration(final File wavFile) throws MalformedURLException, UnsupportedAudioFileException, IOException { AudioInputStream audio = null; try { audio = AudioSystem.getAudioInputStream(wavFile); final AudioFormat format = audio.getFormat(); return wavFile.length() / format.getSampleRate() / (format.getSampleSizeInBits() / 8.0) / format.getChannels(); } finally { audio.close(); } } }