@Override public boolean isFileModified(long fileTimeStamp,long endOffset){
  boolean isFileModified=false;
  if (getLastModifiedTime() > fileTimeStamp || getSize() > endOffset) {
    isFileModified=true;
  }
  return isFileModified;
}

@ Override public boolean isFileModified ( long fileTimeStamp , long endOffset ) { boolean isFileModified = false ; if ( getLastModifiedTime ( ) > fileTimeStamp || getSize ( ) > endOffset ) { isFileModified = true ; } return isFileModified ; }
this method will be used to check whether a file has been modified or not
