Not sure if an issue, but filing for clarification.

Please see the following test "bean":

public static class D {

    public static int V1 = 1;
    public static int V2 = 2;

    private int x;

    @BeanProperty(
        description = "test property",
        preferred = true,
        required = true,
        enumerationValues = {"V1", "V2"})
    public void setX(int v) { x = v; }
    public int getX() { return x; }
}

1. should any checks be performed when executing, e.g., "(new D).setX(-100)" (e.g., any exception be thrown?), or these data are purely informational?
2. the same question for the annotated getter (please see the attached test code) - especially if the property is read-only (e.g., user violates his own constrains).

For now (JDK9 b114) nothing happens when setting invalid value.