Converting Integer to ObservableValue<Integer> in javafx

Question

How to convert Integer To ObservableValue<Integer> in javafx 2.0 and later ?

Nakada

Answer 1

We use a ReadOnlyObjectWrapper<>(*integer value*); and store the value in a ObservableValue<Integer> reference.

ObservableValue<Integer> obsInt = new ReadOnlyObjectWrapper<>(intValue);

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Update

Starting JavaFX 8, you can also do the following :

ObservableValue<Integer> obsInt = new SimpleIntegerProperty(intValue).asObject();

Nakada

Answer 2

Another way.

new SimpleIntegerProperty(integer_value).asObject()

Stowage

#asObject() was added in JavaFX 8 – Pawnshop

One subtle issue, if you need the Integer (object) as opposed to the primitive int (pehaps to allow null references), you have to use the ReadOnlyObjectWrapper<Integer> and not the SimpleIntegerProperty – Deanery

Answer 3

if you use tableview do this : just change Integer to Number

@FXML
private TableColumn<Sockets,Number> key;
...
key.setCellValueFactory(cellData -> cellData.getValue().socketIdProperty());

Massingill

Same for Double values. – Op

Answer 4

IntegerProperty implements ObservableValue<Number> not ObservableValue<Integer>. So you should do:

// Here Person is a class and age is a variable of type IntegerProperty
ObservableValue<Number> ob = Person.age;

Freeload