Can not capture audio the audio when i record it for the second time [android help]

Can not capture audio the audio when i record it for the second time

I am working on an application where, i need to record audio multiple times in a single run. I wrote a code which i got from internet, it capture audio but it is only working for the first time and then it give me error.

line with format PCM_SIGNED 8000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.

My code for capturing audio is

 private void captureAudio() {
    try {
        //Get everything set up for
        // capture
        audioFormat = getAudioFormat();
        DataLine.Info dataLineInfo = new DataLine.Info(TargetDataLine.class, audioFormat);
        targetDataLine = (TargetDataLine) AudioSystem.getLine(dataLineInfo);
        targetDataLine.open(audioFormat);
        targetDataLine.start();

        //Create a thread to capture the
        // microphone data and start it
        // running.  It will run until
        // the Stop button is clicked.
        Thread captureThread = new Thread(new CaptureThread());
        captureThread.start();
    } catch (Exception e) {
        System.out.println(e.getMessage());
        //System.exit(0);
    }//end catch
}//end captureAudio method

The audio format i am using is :

 private AudioFormat getAudioFormat() {
    float sampleRate = 8000.0F;
    //8000,11025,16000,22050,44100
    int sampleSizeInBits = 16;
    //8,16
    int channels = 1;
    //1,2
    boolean signed = true;
    //true,false
    boolean bigEndian = false;
    //true,false
    return new AudioFormat(
            sampleRate,
            sampleSizeInBits,
            channels,
            signed,
            bigEndian);
}

Please help me it's urgent. Thank you in advance.

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