@Override public boolean revokeLock(){
  File lockDir=getLockDir();
  File lockedFile=new File(lockDir,LOCK_FILE_NAME);
  File infoFile=new File(lockDir,INFO_FILE_NAME);
  lockedFile.delete();
  infoFile.delete();
  return lockDir.delete();
}

@ Override public boolean revokeLock ( ) { File lockDir = getLockDir ( ) ; File lockedFile = new File ( lockDir , LOCK_FILE_NAME ) ; File infoFile = new File ( lockDir , INFO_FILE_NAME ) ; lockedFile . delete ( ) ; infoFile . delete ( ) ; return lockDir . delete ( ) ; }
revokes a lock owned by another process .
