Usage Examples

The ta4j-examples module mirrors the structure of this wiki. Each example is a standalone main program—open it in your IDE or run mvn -pl ta4j-examples exec:java -Dexec.mainClass=….

Start quickly

• Quickstart – load data, build a strategy, run a backtest, and visualize the signals.
• StrategyAnalysis – prints the criteria covered in Backtesting.

Bar series & Num

• BuildBarSeries – demonstrates bar builders, sub-series, and moving windows.
• CsvBarsLoader / CsvTradesLoader – ingest historical OHLCV data.
• AdaptiveJsonBarsSerializer – parse Coinbase/Binance OHLC JSON payloads (new in 0.19).
• CompareNumTypes and DecimalNumPrecisionPerformanceTest – choose the right Num implementation for your workload.

Indicators & visualization

• IndicatorsToCsv – export indicator values for spreadsheet analysis.
• IndicatorsToChart – plot price plus indicator overlays.
• CandlestickChart and CandlestickChartWithChopIndicator – visualize entry/exit markers alongside candlestick data.

Charting with ChartWorkflow

The ChartWorkflow class provides a fluent ChartBuilder API for creating trading charts. See the Charting guide for comprehensive documentation. Quick example:

ChartWorkflow chartWorkflow = new ChartWorkflow();
chartWorkflow.builder()
    .withSeries(series)
    .withTradingRecordOverlay(tradingRecord)
    .withIndicatorOverlay(rsi)
    .withIndicatorOverlay(macd)
    .withAnalysisCriterionOverlay(new MaximumDrawdownCriterion(), tradingRecord)
    .display();
    
// Or save to a file
chartWorkflow.builder()
    .withSeries(series)
    .withTradingRecordOverlay(tradingRecord)
    .save("target/charts", "my-strategy");

Strategy examples that use charting:

• RSI2Strategy
• NetMomentumStrategy
• ADXStrategy

Strategy patterns

• CCICorrectionStrategy, MovingMomentumStrategy, RSI2Strategy – foundational strategies referenced throughout Trading Strategies.
• ADXStrategy and GlobalExtremaStrategy – trend following setups with multiple indicators.
• DayOfWeekStrategy – combines calendar rules with indicator signals.
• NetMomentumStrategy – showcases the new Net Momentum indicator from 0.19.
• UnstableIndicatorStrategy – demonstrates how to handle indicators that require long warm-up periods.
• WalkForward – complete walk-forward optimization loop.

Backtesting & analytics

• SimpleMovingAverageBacktest / SimpleMovingAverageRangeBacktest – baseline moving-average crossover tests.
• MovingAverageCrossOverRangeBacktest – parameter sweeps over SMA periods.
• MultiStrategyBacktest – evaluate several strategies across the same dataset.
• TopStrategiesExample – uses the 0.19 BacktestExecutor to keep a rolling leaderboard of strategies.
• CashFlowToChart and BuyAndSellSignalsToChart – visualize equity curves and trade signals.
• TradeCost – study how transaction/holding costs impact returns.
• StrategyExecutionLogging – trace rule evaluations line-by-line.

Bots & live trading

• TradingBotOnMovingBarSeries – continuously updates a moving bar series and reacts to strategy signals.

Have a favorite workflow or integration that is not covered yet? Contributions to ta4j-examples are welcome—new examples make the wiki even more actionable.