Examples Expected Outputs

This page defines success signals for the canonical example lane.

Golden lane examples

1) ta4jexamples.Quickstart

Command:

mvn -pl ta4j-examples exec:java -Dexec.mainClass=ta4jexamples.Quickstart

Success signals:

• Prints staged walkthrough sections ([1/6] through [6/6])
• Prints trade count and key metrics summary
• In GUI mode, opens a chart window

2) ta4jexamples.backtesting.TradingRecordParityBacktest

Command:

mvn -pl ta4j-examples exec:java -Dexec.mainClass=ta4jexamples.backtesting.TradingRecordParityBacktest

Success signals:

• Logs execution-model comparisons
• Reports record-parity checks as passed

3) ta4jexamples.backtesting.TradeFillRecordingExample

Command:

mvn -pl ta4j-examples exec:java -Dexec.mainClass=ta4jexamples.backtesting.TradeFillRecordingExample

Success signals:

• Logs streamed fill ingestion
• Logs grouped order ingestion
• Logs lot-matching outcomes for multiple ExecutionMatchPolicy values

Common failure patterns

Symptom	Likely cause	Next step
Chart does not open	Headless environment	Run on GUI-enabled environment or skip chart display checks
Class not found for exec.mainClass	Typo or moved class	Recheck class path in ta4j-examples/README.md
Data-source example fails with remote fetch error	Connectivity/rate limit/data endpoint issue	Switch to local deterministic dataset example first

Related pages

• Usage Examples
• Troubleshooting Hub
• Backtesting Realism Checklist