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java.lang.Objectorg.jfree.data.AbstractDataset
org.jfree.data.DefaultKeyedValueDataset
A default implementation of the KeyedValueDataset interface.
| Constructor Summary | |
DefaultKeyedValueDataset()
Constructs a new dataset, initially empty. |
|
DefaultKeyedValueDataset(java.lang.Comparable key,
java.lang.Number value)
Creates a new dataset with the specified initial value. |
|
DefaultKeyedValueDataset(KeyedValue data)
Creates a new dataset that uses the data from a KeyedValue instance. |
|
| Method Summary | |
java.lang.Object |
clone()
Creates a clone of the dataset. |
boolean |
equals(java.lang.Object obj)
Tests this dataset for equality with an arbitrary object. |
java.lang.Comparable |
getKey()
Returns the key associated with the value, or null if the dataset has no
data item. |
java.lang.Number |
getValue()
Returns the value. |
int |
hashCode()
Returns a hash code. |
void |
setValue(java.lang.Comparable key,
java.lang.Number value)
Sets the value for the dataset and sends a DatasetChangeEvent to all registered
listeners. |
void |
updateValue(java.lang.Number value)
Updates the value. |
| Methods inherited from class org.jfree.data.AbstractDataset |
addChangeListener, fireDatasetChanged, getGroup, notifyListeners, removeChangeListener, setGroup, validateObject |
| Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Methods inherited from interface org.jfree.data.Dataset |
addChangeListener, getGroup, removeChangeListener, setGroup |
| Constructor Detail |
public DefaultKeyedValueDataset()
public DefaultKeyedValueDataset(java.lang.Comparable key,
java.lang.Number value)
key - the key.value - the value (null permitted).public DefaultKeyedValueDataset(KeyedValue data)
KeyedValue instance.
data - the data (null permitted).| Method Detail |
public java.lang.Comparable getKey()
null if the dataset has no
data item.
getKey in interface KeyedValuepublic java.lang.Number getValue()
getValue in interface Valuenull).public void updateValue(java.lang.Number value)
value - the new value (null permitted).
public void setValue(java.lang.Comparable key,
java.lang.Number value)
DatasetChangeEvent to all registered
listeners.
key - the key.value - the value (null permitted).public boolean equals(java.lang.Object obj)
obj - the object.
public int hashCode()
public java.lang.Object clone()
throws java.lang.CloneNotSupportedException
clone in class AbstractDatasetjava.lang.CloneNotSupportedException - This class will not throw this exception, but subclasses
(if any) might.
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