Simple examples used in FasterXML/jackson-modules-java8#1

Bar.java

public class Bar {
    public String name;

    public Bar(@JsonProperty("name") String name) {
        this.name = name;
    }
}

Foo.java

public class Foo {

    private final ObjectProperty<Bar> bar;

    @JsonCreator
    public Foo(@JsonProperty("bar") Bar bar) {
        this.bar = new SimpleObjectProperty<>(this, "bar", bar);
    }

    public Bar getBar() {
        return bar.get();
    }

    public ObjectProperty<Bar> barProperty() {
        return bar;
    }

    public void setBar(Bar bar) {
        this.bar.set(bar);
    }
}

output.json

[
    {
      "bar" : {
        "@id" : 1,
        "name" : "bar",
        "value" : {
          "name" : "bar"
        }
      }
    }, {
      "bar" : {
        "@id" : 2,
        "name" : "bar",
        "bound" : true,
        "value" : 1
      }
    }
]

Scratch.java

Foo f1 = new Foo(null);
Foo f2 = new Foo(null);

Bar bar = new Bar("bar");
f1.barProperty().setValue(bar);

f2.barProperty().bind(f1.barProperty());

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JavaFXModule());

String json = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(Arrays.asList(f1, f2));