By Shekhar Varshney
Build an automatic foreign exchange bot from scratch with java. during this booklet, you are going to find out about the nitty-gritty of computerized buying and selling and feature a better examine Java, the Spring Framework, event-driven programming, and different open resource APIs, particularly Google's Guava API. and naturally, improvement will all be test-driven with unit checking out insurance.
The crucial topic of Building buying and selling Bots utilizing Java is to create a framework which may facilitate computerized buying and selling on many of the brokerage structures, with minimal alterations. on the finish of the adventure, you may have a operating buying and selling bot, with a pattern implementation utilizing the OANDA relaxation API, that's loose to use.
What you will Learn
- Find out approximately buying and selling bots
- Discover the main points of tradeable tools and observe bots to them
- Track and use industry info events
- Place orders and trades
- Work with trade/order and account events
Who This booklet Is For
Experienced programmers new to bots and different algorithmic buying and selling and finance techniques.
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Extra info for Building Trading Bots Using Java
GetCurrency())); } 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 44 } Chapter 2 ■ Account Management Figure 2-1. Launch configuration Figure 2-2. Sample output 45 CHAPTER 3 Tradeable Instruments In this chapter we will focus our attention on instruments available to trade on the brokerage platform. The instrument entity is pretty much the core of a trading platform, as everything revolves around it. From obtaining prices, to placing orders/trades, the instrument is what is the principal actor.
Listing 2-7. get(OandaJsonKeys. closeSilently(httpClient); } return accInfos; } The OANDA REST API has an endpoint to retrieve all account information in a single request: 1 GET v1/accounts However, looking at Listing 2-7, we still call the function that provides all account information for a single account iteratively. Why do we do this? 1 } ] } Encapsulating Everything Behind a Generic AccountInfoService As previously discussed, one of our key design objectives is to be able to encapsulate providers behind meaningful services so that if required, we can switch provider implementations and change from provider OANDA to say provider LMAX without having to change a single line of compiled code.
Our interface would look something like Listing 2-2. Listing 2-2. AccountDataProvider Interface Definition 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 15 16 17 18 19 20 /** * A provider of Account information. An account information might * typically include base currency, leverage, margin available, PNL * information etc. Some brokerages allow the creation of various sub * accounts or currency wallets. The idea is to give ability to fund * these accounts from various currency denominated bank accounts.