# Class ReadOnlyBooleanProperty

java.lang.Object
javafx.beans.binding.BooleanExpression
javafx.beans.property.ReadOnlyBooleanProperty

All Implemented Interfaces:
  `Observable`, `ReadOnlyProperty<Boolean>`, `ObservableBooleanValue`, `ObservableValue<Boolean>`

Direct Known Subclasses:
  `BooleanProperty`, `ReadOnlyBooleanPropertyBase`

public abstract class ReadOnlyBooleanProperty extends BooleanExpression implements ReadOnlyProperty<Boolean>
Superclass for all readonly properties wrapping a `boolean`.

Since:
  JavaFX 2.0
See Also:
  - `ObservableBooleanValue`
  - `BooleanExpression`
  - `ReadOnlyProperty`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ReadOnlyBooleanProperty()`
  The constructor of `ReadOnlyBooleanProperty`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `ReadOnlyObjectProperty<Boolean>`
  `asObject()`
  Creates a `ReadOnlyObjectProperty` that holds the value of this `ReadOnlyBooleanProperty`.
  `static ReadOnlyBooleanProperty`
  `readOnlyBooleanProperty(ReadOnlyProperty<Boolean> property)`
  Returns a `ReadOnlyBooleanProperty` that wraps a `ReadOnlyProperty`.
  `String`
  `toString()`
  Returns a string representation of this `ReadOnlyBooleanProperty` object.

  ### Methods declared in class javafx.beans.binding.BooleanExpression

  `and, asString, booleanExpression, booleanExpression, getValue, isEqualTo, isNotEqualTo, not, or`

  ### Methods declared in class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

  ### Methods declared in interface javafx.beans.Observable

  `addListener, removeListener, subscribe`

  ### Methods declared in interface javafx.beans.value.ObservableBooleanValue

  `get`

  ### Methods declared in interface javafx.beans.value.ObservableValue

  `addListener, flatMap, getValue, map, orElse, removeListener, subscribe, subscribe, when`

  ### Methods declared in interface javafx.beans.property.ReadOnlyProperty

  `getBean, getName`

- ## Constructor Details

  - ### ReadOnlyBooleanProperty

    public ReadOnlyBooleanProperty()
    The constructor of `ReadOnlyBooleanProperty`.

- ## Method Details

  - ### toString

    public String toString()
    Returns a string representation of this `ReadOnlyBooleanProperty` object.
    Overrides:
      `toString` in class `Object`
    Returns:
      a string representation of this `ReadOnlyBooleanProperty` object.

  - ### readOnlyBooleanProperty

    public static ReadOnlyBooleanProperty readOnlyBooleanProperty(ReadOnlyProperty<Boolean> property)
    Returns a `ReadOnlyBooleanProperty` that wraps a `ReadOnlyProperty`. If the `ReadOnlyProperty` is already a `ReadOnlyBooleanProperty`, it will be returned. Otherwise a new `ReadOnlyBooleanProperty` is created that is bound to the `ReadOnlyProperty`. Note: null values will be interpreted as "false"
    Parameters:
      `property` - The source `ReadOnlyProperty`
    Returns:
      A `ReadOnlyBooleanProperty` that wraps the `ReadOnlyProperty` if necessary
    Throws:
      `NullPointerException` - if `property` is `null`
    Since:
      JavaFX 8.0

  - ### asObject

    public ReadOnlyObjectProperty<Boolean> asObject()
    Creates a `ReadOnlyObjectProperty` that holds the value of this `ReadOnlyBooleanProperty`. If the value of this `ReadOnlyBooleanProperty` changes, the value of the `ReadOnlyObjectProperty` will be updated automatically.
    Overrides:
      `asObject` in class `BooleanExpression`
    Returns:
      the new `ReadOnlyObjectProperty`
    Since:
      JavaFX 8.0