FULL PRODUCT VERSION :
JDK7u9

ADDITIONAL OS VERSION INFORMATION :
Windows XP, Windows 7, Windows Server 2008

A DESCRIPTION OF THE PROBLEM :
try{
  File f = new File(main.getWavFileName(0, tab));
  AudioInputStream audioInputStream =AudioSystem.getAudioInputStream(f);
  audioInputStream.close();
  audioInputStream = null;
  f = null;
}catch(Exception e) {
  e.printStackTrace();
}

try {
  Files.delete(Paths.get(f2.getAbsolutePath()));
} catch (IOException e) {
  e.printStackTrace();
}

In the above code the file could not be deleted even after AudioInputStream was closed. The same code works well with Java 1.6.

REGRESSION. Last worked in version 6u31

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Steps are given in the description

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
File should be deleted once AudioInputStream is closed.
ACTUAL -
Invoking .close() on AudioInputStream object does not release resource it is holding.

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
The only workaround that I see is calling System.gc() explicitly but it might cause performance issues.