org.jfree.chart.labels

Class StandardXYSeriesLabelGenerator

java.lang.Object

org.jfree.chart.labels.StandardXYSeriesLabelGenerator

All Implemented Interfaces:

Serializable, Cloneable, XYSeriesLabelGenerator, org.jfree.util.PublicCloneable

public class StandardXYSeriesLabelGenerator
extends Object
implements XYSeriesLabelGenerator, Cloneable, org.jfree.util.PublicCloneable, Serializable

A standard series label generator for plots that use data from an XYDataset.

This class implements PublicCloneable by mistake but we retain this for the sake of backward compatibility.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_LABEL_FORMAT The default item label format.

Constructor Summary

Constructors

Constructor and Description
StandardXYSeriesLabelGenerator() Creates a default series label generator (uses DEFAULT_LABEL_FORMAT).
StandardXYSeriesLabelGenerator(String format) Creates a new series label generator.

Method Summary

Modifier and Type	Method and Description
Object	clone() Returns an independent copy of the generator.
protected Object[]	createItemArray(XYDataset dataset, int series) Creates the array of items that can be passed to the MessageFormat class for creating labels.
boolean	equals(Object obj) Tests this object for equality with an arbitrary object.
String	generateLabel(XYDataset dataset, int series) Generates a label for the specified series.
int	hashCode() Returns a hash code for this instance.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_LABEL_FORMAT

public static final String DEFAULT_LABEL_FORMAT

The default item label format.

See Also:

Constant Field Values

Constructor Detail

StandardXYSeriesLabelGenerator

public StandardXYSeriesLabelGenerator()

Creates a default series label generator (uses DEFAULT_LABEL_FORMAT).

StandardXYSeriesLabelGenerator

public StandardXYSeriesLabelGenerator(String format)

Creates a new series label generator.

Parameters:

format - the format pattern (null not permitted).

Method Detail

generateLabel

public String generateLabel(XYDataset dataset,
                            int series)

Generates a label for the specified series. This label will be used for the chart legend.

Specified by:

generateLabel in interface XYSeriesLabelGenerator

Parameters:

dataset - the dataset (null not permitted).

series - the series.

Returns:

A series label.

createItemArray

protected Object[] createItemArray(XYDataset dataset,
                                   int series)

Creates the array of items that can be passed to the MessageFormat class for creating labels.

Parameters:

dataset - the dataset (null not permitted).

series - the series (zero-based index).

Returns:

The items (never null).

clone

public Object clone()
             throws CloneNotSupportedException

Returns an independent copy of the generator. This is unnecessary, because instances are immutable anyway, but we retain this behaviour for backwards compatibility.

Specified by:

clone in interface org.jfree.util.PublicCloneable

Overrides:

clone in class Object

Returns:

A clone.

Throws:

CloneNotSupportedException - if cloning is not supported.

equals

public boolean equals(Object obj)

Tests this object for equality with an arbitrary object.

Overrides:

equals in class Object

Parameters:

obj - the other object (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class Object

Returns:

A hash code.