Enabled javadoc validation in Eclipse (see the screenshot), got 142 warnings:
Description Resource Location
Javadoc: Invalid reference package-info.java line 27
Javadoc: Invalid reference package-info.java line 27
Javadoc: Unexpected tag Window.java line 821
Javadoc: Missing #: "Platform.exit()}." Util.java line 381
Javadoc: Unexpected tag TriangleMesh.java line 854
Javadoc: Missing closing brace for inline tag TreeView.java line 146
Javadoc: Unexpected tag TreeTableViewSkin.java line 255
Javadoc: Missing closing brace for inline tag TreeTableView.java line 302
Javadoc: Description expected after @return TraversalEngine.java line 136
Javadoc: Unexpected tag TestNodeBase.java line 253
Javadoc: Invalid tag TableViewTest.java line 868
Javadoc: Invalid tag TableViewTest.java line 2055
Javadoc: Unexpected tag TableViewSkin.java line 204
Javadoc: Missing closing brace for inline tag TableView.java line 275
Javadoc: Description expected after @return TableSkinShim.java line 67
Javadoc: Description expected after @return TableSkinShim.java line 79
Javadoc: Description expected after @return StyleManager.java line 1933
Javadoc: Description expected after @return StyleManager.java line 1948
Javadoc: Description expected after @return SkinStub.java line 81
Javadoc: Unexpected tag ShapeCacheTest.java line 58
Javadoc: Unexpected tag Shape.java line 982
Javadoc: Missing #: "applies(Styleable)} method except it also returns" Selector.java line 110
Javadoc: Missing #: "managed()} method will only indicate the amount of the resource" ResourcePool.java line 37
Javadoc: Missing #: "max()}" ResourcePool.java line 34
Javadoc: Missing #: "max()} method, larger than the amount" ResourcePool.java line 131
Javadoc: Missing #: "max()} method, larger than the amount returned by the" ResourcePool.java line 110
Javadoc: Missing #: "max()} method." ResourcePool.java line 121
Javadoc: Missing #: "origTarget()} method, and may change over time." ResourcePool.java line 111
Javadoc: Missing #: "origTarget()} method." ResourcePool.java line 132
Javadoc: Missing #: "target()} method will return" ResourcePool.java line 38
Javadoc: Missing #: "used()}" ResourcePool.java line 92
Javadoc: Missing #: "used()} and {@link max()}" ResourcePool.java line 34
Javadoc: Unexpected tag RepeatStructConverter.java line 66
Javadoc: Missing #: "setCompositeRule(int), PiscesRenderer.setComposite(int, float)" RendererBase.java line 57
Javadoc: Missing #: "setCompositeRule(int), setComposite(int, float)" RendererBase.java line 44
Javadoc: Missing #: "setCompositeRule(int), setComposite(int, float)" RendererBase.java line 50
Javadoc: Missing #: "Effect.filter()} operation and it is queried for" RenderState.java line 34
Javadoc: Unexpected tag Rectangle.java line 661
Javadoc: Unexpected tag Rectangle.java line 639
Javadoc: Invalid param tag name RadialGradientPaintContext.java line 171
Javadoc: Invalid param tag name RadialGradientContext.java line 151
Javadoc: Description expected after @return QuantumClipboard.java line 148
Javadoc: Description expected after @return QuantumClipboard.java line 172
Javadoc: Unexpected tag QuadCurve2D.java line 138
Javadoc: Unexpected tag QPathTest.java line 62
Javadoc: Unexpected tag PulseReceiver.java line 42
Javadoc: Unexpected tag PseudoClassImpl.java line 39
Javadoc: Description expected after @return PropertyReference.java line 96
Javadoc: Description expected after @return PluginListener.java line 49
Javadoc: Unexpected tag Platform.java line 108
Javadoc: Missing #: "close()" PickResultChooser.java line 108
Javadoc: Description expected after @return PickRay.java line 240
Javadoc: Unexpected tag Path2DGrowTest.java line 34
Javadoc: Missing #: "Path2D(Shape, BaseTransform) Path2D}" Path2D.java line 1995
Javadoc: Missing closing brace for inline tag Path2D.java line 811
Javadoc: Missing closing brace for inline tag Path2D.java line 913
Javadoc: Unexpected tag Path2D.java line 1432
Javadoc: Unexpected tag Path2D.java line 1473
Javadoc: Unexpected tag PNTMeshVertexBufferLengthTest.java line 62
Javadoc: Unexpected text Node.java line 1175
Javadoc: Unexpected text Node.java line 1235
Javadoc: Unexpected text Node.java line 1275
Javadoc: Unexpected tag MainThreadTest.java line 37
Javadoc: Description expected after @return Logging.java line 44
Javadoc: Unexpected tag LocalStorageAccessTest.java line 40
Javadoc: Unexpected tag ListViewSkin.java line 450
Javadoc: Missing closing brace for inline tag ListView.java line 165
Javadoc: Invalid param tag name LinearGradientContext.java line 105
Javadoc: Unexpected tag Line2D.java line 133
Javadoc: Unexpected tag Line2D.java line 139
Javadoc: Unexpected tag Line2D.java line 145
Javadoc: Unexpected tag Line2D.java line 151
Javadoc: Unexpected tag IosPlatformFactory.java line 37
Javadoc: Unexpected tag IosPlatformFactory.java line 45
Javadoc: Unexpected tag IosPlatformFactory.java line 53
Javadoc: Unexpected tag IosPlatformFactory.java line 61
Javadoc: Unexpected tag IosPlatformFactory.java line 69
Javadoc: Unexpected tag IosMenuDelegate.java line 40
Javadoc: Unexpected tag IosMenuDelegate.java line 49
Javadoc: Unexpected tag IosMenuDelegate.java line 58
Javadoc: Unexpected tag IosMenuDelegate.java line 67
Javadoc: Unexpected tag IosMenuDelegate.java line 76
Javadoc: Unexpected tag IosMenuDelegate.java line 85
Javadoc: Unexpected tag IosMenuDelegate.java line 94
Javadoc: Unexpected tag IosMenuDelegate.java line 103
Javadoc: Unexpected tag IosMenuDelegate.java line 112
Javadoc: Unexpected tag IosMenuDelegate.java line 121
Javadoc: Unexpected tag IosMenuDelegate.java line 130
Javadoc: Unexpected tag IosMenuDelegate.java line 139
Javadoc: Unexpected tag IosMenuBarDelegate.java line 39
Javadoc: Unexpected tag IosMenuBarDelegate.java line 48
Javadoc: Unexpected tag IosMenuBarDelegate.java line 57
Javadoc: Unexpected tag IosMenuBarDelegate.java line 66
Javadoc: Unexpected tag IosImageLoaderFactory.java line 57
Javadoc: Unexpected tag IosImageLoaderFactory.java line 65
Javadoc: Unexpected tag IosImageLoader.java line 206
Javadoc: Unexpected tag IosImageLoader.java line 218
Javadoc: Unexpected tag IosClipboardDelegate.java line 33
Javadoc: Unexpected tag IosApplication.java line 51
Javadoc: Unexpected tag IosApplication.java line 61
Javadoc: Unexpected tag IosApplication.java line 75
Javadoc: Unexpected tag IosApplication.java line 83
Javadoc: Unexpected tag IosApplication.java line 91
Javadoc: Unexpected tag IosApplication.java line 99
Javadoc: Unexpected tag IosApplication.java line 116
Javadoc: Unexpected tag IosApplication.java line 129
Javadoc: Unexpected tag IosApplication.java line 147
Javadoc: Unexpected tag IosApplication.java line 161
Javadoc: Description expected after @return InputMap.java line 308
Javadoc: Description expected after @return InputMap.java line 678
Javadoc: Unexpected tag HugePolygonClipTest.java line 68
Javadoc: Malformed reference (missing end space separator) GradientColorMap.java line 33
Javadoc: Missing closing brace for inline tag GlassRobot.java line 168
Javadoc: Missing closing brace for inline tag GlassRobot.java line 168
Javadoc: Description expected after @return GeneralTransform3D.java line 136
Javadoc: Description expected after @return FilterEffect.java line 155
Javadoc: Unexpected tag FXCanvas.java line 275
Javadoc: Unexpected tag FXCanvas.java line 275
Javadoc: Description expected after @return EmbeddedScene.java line 225
Javadoc: Missing #: "getSourceRegion(Rectangle, Rectangle, Rectangle)} method." EffectPeer.java line 205
Javadoc: Missing #: "getTextureCoordinates(float[],float,float,float,float,Rectangle,BaseTransform)}." EffectPeer.java line 277
Javadoc: Description expected after @return Direction.java line 56
Javadoc: Description expected after @return DefaultCancelButtonTestBase.java line 93
Javadoc: Description expected after @return DefaultCancelButtonTestBase.java line 152
Javadoc: Unexpected tag DashedRectTest.java line 58
Javadoc: Description expected after @return D3DContext.java line 76
Javadoc: Unexpected tag ClipShapeTest.java line 91
Javadoc: Unexpected tag BorderStyleConverter.java line 159
Javadoc: Unexpected tag BorderImageSliceConverter.java line 76
Javadoc: Unexpected tag BorderConverter.java line 196
Javadoc: Invalid tag BehaviorBase.java line 163
Javadoc: Invalid tag BehaviorBase.java line 176
Javadoc: Invalid tag BehaviorBase.java line 190
Javadoc: Invalid tag BehaviorBase.java line 204
Javadoc: Invalid tag BehaviorBase.java line 218
Javadoc: Invalid tag BehaviorBase.java line 232
Javadoc: Missing #: "managed()} method and support for sharing" BaseResourcePool.java line 32
Javadoc: Unexpected tag BackgroundSizeConverter.java line 83
Javadoc: Unexpected tag BackgroundPositionConverter.java line 86
Javadoc: Description expected after @return AudioClip.java line 313
Javadoc: Unexpected tag Arc2D.java line 202
Javadoc: Invalid reference AndroidFontFinder.java line 52