FULL PRODUCT VERSION :
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Tested it in windows 7, 8, 8.1.

A DESCRIPTION OF THE PROBLEM :
trying to convert *.wav audio file to specific *.wav file.

try (AudioInputStream sias = AudioSystem.getAudioInputStream(mediaFileToConvert)) {

AudioFormat newFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 8000f, 16, 1, 2, 8000f, false);
AudioInputStream convert1AIS = AudioSystem.getAudioInputStream(newFormat, sias);

AudioSystem.write(convert1AIS, AudioFileFormat.Type.WAVE, saveConvertedFilelocalDest);

convert1AIS.close();
}

while trying to delete mediaFileToConvert giving no error but not deleting file. even unable to delete manually


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
System.gc();