Since chart polylines are limited to 150 points, I use a simple code with polyline.removePoint(0) that truncates the oldest point when reaching the IPolyLineChartObject.MAX_POINTS_COUNT limit. It works very well in JForex Client on live RT data and while using Historical Tester. The same code fails in JForex-SDK where it gives ConcurrentModificationException . The attached Polyline_error.zip file contains polyline_error_info-and_console.txt that describes steps to repeat this error and the Console report. The complete JForexSDK project is in the same zip file.

The above described problem makes it impossible to develop and debug in Eclipse-JForex-SDK environment strategies that use those very useful self-truncating polylines.

Best regards,
leoterra

After investigating this problem somewhat closer, I found that it has nothing to do with polyline.removePoint(0). While working in SDK JForex API ver 2.7.8. it is impossible to add series of points using plain chart.add(polyLine); The problem is somewhat time-dependent, so sometimes it fails at the first point, sometimes it accepts a few.
After adding Thread.sleep(150) between adding points, it has accepted about a dozen calls but not every time. In Historical Tester it processes days of tick data at full speed without any problems. So, please compare relevant portions of the newest Client and SDK builds.

leoterra

could you please provide an example program and an example strategy which replicate the issue?

The attached Polyline_error_simple_test.zip contains an example program and strategy saved as a ready-to-use JForex-SDK poject. The same zip contains also step by step instruction and console printout in polyline_error_info-and_console.txt

Compared to the attachment in my first message, this one is simplified and draws just one polyline. It executes flawlessly in Client (both RT and Historical Tester) but fails immediately in SDK.