We have a problem about save&load on Json.

Question

So, Json stuff.
We can save the json file,
but there is an error when we try to load it.

If we added a point or set the path to the chick and save to JSON file,
ERROR~~~

If we didn't add a point or didn't set the path to the chick and save to JSON file,
No error.

Here is error messages

java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to javafx.graphics@10.0.2/com.sun.prism.paint.Paint

at javafx.graphics/com.sun.javafx.sg.prism.NGCanvas.renderStream(Unknown Source)
at javafx.graphics/com.sun.javafx.sg.prism.NGCanvas.renderContent(Unknown Source)
at javafx.graphics/com.sun.javafx.sg.prism.NGNode.doRender(Unknown Source)

......

Please, respond as soon as possible, HQ

Comments

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I wanna go home. Plz
I have stuck in the computer lab for ... I forgot.

Answer 1

Also having the same issue...

Answer 2

It sounds like you've got a data field inside one of your data model classes that is of a type that GSON doesn't serialize very well. From your error message, probably a JavaFX object of some kind.

Maybe Color objects aren't well supported by GSON? Not sure.

Instead of storing a javafx.scene.paint.Color object directly inside of AnimalTrack, you could consider storing a String field that will represent the Color.

To convert a JavaFX color into a string, you can use:

https://docs.oracle.com/javafx/2/api/javafx/scene/paint/Color.html#web(java.lang.String)

And then you can provide a getter method that still gets the Color object, by using Color.valueOf(colorString)

https://docs.oracle.com/javafx/2/api/javafx/scene/paint/Color.html#valueOf(java.lang.String)

Answer 3

My group has problem with that one too, when we do something with that window, it just cannot load, but when we do nothing, it work.