public void updateTxt(ArrayList<MusicalInstrument> arr) throws FileNotFoundException {
// instrumentData[0], instrumentData[1], stockQty, soldQty, pPrice, sPrice, numRented
FileOutputStream fileOut = new FileOutputStream(TXTFILE);
PrintStream out = new PrintStream(fileOut);
for (MusicalInstrument m : arr)
out.print(
"\n"
+ m.getDescription()
+ "|"
+ m.getStockCode()
+ "|"
+ m.getQuantityInStock()
+ "|"
+ m.getQuantitySold()
+ "|"
+ m.getPurchasePrice()
+ "|"
+ m.getSellingPrice()
+ "|"
+ m.getNumberRented());
out.flush();
out.close();
}
