Capture last traded price when there is any change in last traded price ONLY

tickerProvider.setOnTickerArrivalListener(new OnTicks() {
            @Override
            public void onTicks(ArrayList<Tick> ticks) {
                NumberFormat formatter = new DecimalFormat();
                System.out.println("ticks size "+ticks.size());
                if(ticks.size() > 0) {
                    System.out.println("last price "+ticks.get(0).getLastTradedPrice());
                    System.out.println("open interest "+formatter.format(ticks.get(0).getOi()));
                    System.out.println("day high OI "+formatter.format(ticks.get(0).getOpenInterestDayHigh()));
                    System.out.println("day low OI "+formatter.format(ticks.get(0).getOpenInterestDayLow()));
                    System.out.println("change "+formatter.format(ticks.get(0).getChange()));
                    System.out.println("tick timestamp "+ticks.get(0).getTickTimestamp());
                    System.out.println("tick timestamp date "+ticks.get(0).getTickTimestamp());
                    System.out.println("last traded time "+ticks.get(0).getLastTradedTime());
                    System.out.println(ticks.get(0).getMarketDepth().get("buy").size());
                }
            }
        });