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Cannot extend JavaFX class LineChart #11588

TeXSatz opened this issue Jun 25, 2019 · 1 comment


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commented Jun 25, 2019

Probably similar: #11584
Probably related: #7631

Compiling with 2.12.8 works, and runs well.
Switching to 2.13.0 breaks the compile:

import javafx.scene.chart.{LineChart, NumberAxis}

class MyLineChart(val xAxis: NumberAxis, val yAxis: NumberAxis)
  extends LineChart[Number, Number](xAxis, yAxis) {
    // ...
[error] ...\src\main\scala\MyLineChart.scala:3:7: name clash between inherited members:
[error] private[package chart] def dataBeingRemovedIsAdded(x$1: javafx.scene.chart.XYChart.Data[Number,Number], x$2: javafx.scene.chart.XYChart.Series[Number,Number]): Unit in class XYChart and
[error] private[package chart] def dataBeingRemovedIsAdded(x$1: javafx.scene.chart.XYChart.Data, x$2: javafx.scene.chart.XYChart.Series): Unit in class LineChart
[error] have same type after erasure: (x$1: javafx.scene.chart.XYChart.Data, x$2: javafx.scene.chart.XYChart.Series)Unit
[error] class MyLineChart(val xAxis: NumberAxis, val yAxis: NumberAxis)
[error]       ^
[error] one error found

Using JavaFX 11.0.2 or 12.0.1 with Java 11.0.2.
See also:
This prevents my adoption of 2.13.0 for several projects.


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commented Jun 25, 2019

I'm going to guess this is also #11584, seeing how the error message mentions XYChart.Data without type arguments.

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