DefaultValueDataset (JFreeChart as OSGI-bundle 1.5.6 API)

java.lang.Object
- org.jfree.data.general.AbstractDataset
- - org.jfree.data.general.DefaultValueDataset

All Implemented Interfaces:

ObjectInputValidation, Serializable, Cloneable, PublicCloneable, Dataset, ValueDataset, Value
```
public class DefaultValueDataset
extends AbstractDataset
implements ValueDataset, Cloneable, PublicCloneable, Serializable
```
A dataset that stores a single value (that is possibly null). This class provides a default implementation of the ValueDataset interface.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`DefaultValueDataset()`	Constructs a new dataset, initially empty.
`DefaultValueDataset(double value)`	Creates a new dataset with the specified value.
`DefaultValueDataset(Number value)`	Creates a new dataset with the specified value.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`	Tests this dataset for equality with an arbitrary object.
`Number`	`getValue()`	Returns the value.
`int`	`hashCode()`	Returns a hash code.
`void`	`setValue(Number value)`	Sets the value and sends a `DatasetChangeEvent` to all registered listeners.

Methods inherited from class org.jfree.data.general.AbstractDataset
addChangeListener, clone, fireDatasetChanged, getNotify, hasListener, notifyListeners, removeChangeListener, setNotify, validateObject

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.data.general.Dataset
addChangeListener, removeChangeListener

Methods inherited from interface org.jfree.chart.api.PublicCloneable
clone

- Constructor Detail
  - DefaultValueDataset
```
public DefaultValueDataset()
```
    Constructs a new dataset, initially empty.
  - DefaultValueDataset
```
public DefaultValueDataset(double value)
```
    Creates a new dataset with the specified value.
    
    Parameters:
    
    value - the value.
  - DefaultValueDataset
```
public DefaultValueDataset(Number value)
```
    Creates a new dataset with the specified value.
    
    Parameters:
    
    value - the initial value (null permitted).
- Method Detail
  - getValue
```
public Number getValue()
```
    Returns the value.
    
    Specified by:
    
    getValue in interface Value
    
    Returns:
    
    The value (possibly null).
  - setValue
```
public void setValue(Number value)
```
    Sets the value and sends a DatasetChangeEvent to all registered listeners.
    
    Parameters:
    
    value - the new value (null permitted).
  - equals
```
public boolean equals(Object obj)
```
    Tests this dataset for equality with an arbitrary object.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the object (null permitted).
    
    Returns:
    
    A boolean.
  - hashCode
```
public int hashCode()
```
    Returns a hash code.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    A hash code.