# Interface WritableDoubleValue

All Superinterfaces:
  `WritableNumberValue`, `WritableValue<Number>`

All Known Implementing Classes:
  `DoubleProperty`, `DoublePropertyBase`, `JavaBeanDoubleProperty`, `ReadOnlyDoubleWrapper`, `SimpleDoubleProperty`, `SimpleStyleableDoubleProperty`, `StyleableDoubleProperty`

public interface WritableDoubleValue extends WritableNumberValue
A writable double value.

Since:
  JavaFX 2.0
See Also:
  - `WritableValue`
  - `WritableNumberValue`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `double`
  `get()`
  Get the wrapped value.
  `void`
  `set(double value)`
  Set the wrapped value.
  `void`
  `setValue(Number value)`
  Set the wrapped value.

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

  `getValue`

- ## Method Details

  - ### get

    double get()
    Get the wrapped value. Unlike `WritableValue.getValue()`, this method returns primitive double. Needs to be identical to `WritableValue.getValue()`.
    Returns:
      The current value

  - ### set

    void set(double value)
    Set the wrapped value. Unlike `setValue(java.lang.Number)`, this method uses primitive double.
    Parameters:
      `value` - The new value

  - ### setValue

    void setValue(Number value)
    Set the wrapped value.

    Note: this method should accept null without throwing an exception, setting "0.0" instead.

    Specified by:
      `setValue` in interface `WritableValue<Number>`
    Parameters:
      `value` - The new value