Changing IntegerProperty[value: ] to just value

Question

I am bind the value of number of items left in the factory.

private int item;
private SimpleIntegerProperty itemProperty = new SimpleIntegerProperty();
private SimpleIntegerProperty remainingItem = new Simple IntegerProperty();
private SimpleIntegerProperty soldItem = new Simple IntegerProperty();

in the constructor

this.item = item;
itemProperty.set(item);
soldItem.set(0);
remainingItem.bind(soldItem.subtract(item).multiply(-1));
//itemProperty.bind((soldItem.subtract(item).multiply(-1));

In the fxml file

<Text text="${controller.factory.remainingProperty.get()}">

when I try to bind itemProperty it give invalid when I try to display with remainingProperty ReadOnlyIntegerProperty with get method,it throws EXCEPTION in the main class.

I am trying to subtract the number of item from item and display it.

No, I mean the [stack trace](https://stackoverflow.com/questions/3988788/what-is-a-stack-trace-and-how-can-i-use-it-to-debug-my-application-errors) — James_D, May 22 '20 at 22:31

score 3 · Answer 1 · answered May 22 '20 at 23:04

3

Expression bindings are not method calls; they have a different syntax. Here, assuming there is an appropriate factory property in the controller with the appropriate method defined (remainingItemProperty()), you should use

<Text text="${controller.factory.remainingItem}">

answered May 22 '20 at 23:04

James_D

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I still got that exception – mr.mr.soysauce May 22 '20 at 23:37

Changing IntegerProperty[value: ] to just value

1 Answers1