IBKR Java API – Receiving Market Data

Java is an extremely popular programming language, so it is no surprise that it has been ranked #1 on the TIOBE Index. Its solid and fast performance enhances algo trading systems. IBKR API supports custom applications written in Java.

We provide sample files to get algo traders started in coding and backtesting using this robust technology and pairing it with our award-winning Trader Workstation (TWS) platform.

Let’ s take a quick look at how easy it is to request market data, an important component in backtesting trading algos.

First, download the sample routine in Java via the Testbed, and review the supplemental file ScannerSubscriptionSamples and ContractSamples.java. These sample routines demonstrate how one can code the contracts and order parameters in Java. For instance:

public class EWrapperImpl implements EWrapper {

@Override
public void tickPrice(int tickerId, int field, double price, TickAttrib attribs) {
System.out.println(“Tick Price. Ticker Id:”+tickerId+”, Field: “+field+”, Price: “+price+”, CanAutoExecute: “+ attribs.canAutoExecute() “, pastLimit: ” + attribs.pastLimit() + “, pre-open: ” + attribs.preOpen());
}

@Override
public void tickSize(int tickerId, int field, int size) {
System.out.println(“Tick Size. Ticker Id:” + tickerId + “, Field: ” + field + “, Size: ” + size);
}

The connection to TWS is supported via the above mentioned method IBApi.EWrapper. See the GitHub Reference Guide for more sample code on delivering market data and sending order information.

For additional syntax samples in this programming language, visit our Java API news section.