## org.jfree.chart.entity
Class StandardEntityCollection

    java.lang.Object
      org.jfree.chart.entity.StandardEntityCollection

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, EntityCollection, org.jfree.util.PublicCloneable

    public class StandardEntityCollection

extends java.lang.Object
implements EntityCollection, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A standard implementation of the `EntityCollection` interface.

See Also:
  Serialized Form

Constructor Summary
`StandardEntityCollection()` Constructs a new entity collection (initially empty).

Method Summary
`void` `add(ChartEntity entity)` Adds an entity to the collection.
`void` `addAll(EntityCollection collection)` Adds all the entities from the specified collection.
`void` `clear()` Clears all the entities from the collection.
`java.lang.Object` `clone()` Returns a clone of this entity collection.
`boolean` `equals(java.lang.Object obj)` Tests this object for equality with an arbitrary object.
`java.util.Collection` `getEntities()` Returns the entities in an unmodifiable collection.
`ChartEntity` `getEntity(double x, double y)` Returns the last entity in the list with an area that encloses the specified coordinates, or `null` if there is no such entity.
`ChartEntity` `getEntity(int index)` Returns a chart entity from the collection.
`int` `getEntityCount()` Returns the number of entities in the collection.
`java.util.Iterator` `iterator()` Returns an iterator for the entities in the collection.

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

Constructor Detail

### StandardEntityCollection

    public StandardEntityCollection()

  Constructs a new entity collection (initially empty).

Method Detail

### getEntityCount

    public int getEntityCount()

  Returns the number of entities in the collection.

  Specified by:
    `getEntityCount` in interface `EntityCollection`
  Returns:
    The entity count.

### getEntity

    public ChartEntity getEntity(int index)

  Returns a chart entity from the collection.

  Specified by:
    `getEntity` in interface `EntityCollection`
  Parameters:
    `index` - the entity index.
  Returns:
    The entity.
  See Also:
    `add(ChartEntity)`

### clear

    public void clear()

  Clears all the entities from the collection.

  Specified by:
    `clear` in interface `EntityCollection`

### add

    public void add(ChartEntity entity)

  Adds an entity to the collection.

  Specified by:
    `add` in interface `EntityCollection`
  Parameters:
    `entity` - the entity (`null` not permitted).

### addAll

    public void addAll(EntityCollection collection)

  Adds all the entities from the specified collection.

  Specified by:
    `addAll` in interface `EntityCollection`
  Parameters:
    `collection` - the collection of entities (`null` not permitted).

### getEntity

    public ChartEntity getEntity(double x,
                                 double y)

  Returns the last entity in the list with an area that encloses the specified coordinates, or `null` if there is no such entity.

  Specified by:
    `getEntity` in interface `EntityCollection`
  Parameters:
    `x` - the x coordinate.
    `y` - the y coordinate.
  Returns:
    The entity (possibly `null`).

### getEntities

    public java.util.Collection getEntities()

  Returns the entities in an unmodifiable collection.

  Specified by:
    `getEntities` in interface `EntityCollection`
  Returns:
    The entities.

### iterator

    public java.util.Iterator iterator()

  Returns an iterator for the entities in the collection.

  Specified by:
    `iterator` in interface `EntityCollection`
  Returns:
    An iterator.

### equals

    public boolean equals(java.lang.Object obj)

  Tests this object for equality with an arbitrary object.

  Overrides:
    `equals` in class `java.lang.Object`
  Parameters:
    `obj` - the object to test against (`null` permitted).
  Returns:
    A boolean.

### clone

    public java.lang.Object clone()
                           throws java.lang.CloneNotSupportedException

  Returns a clone of this entity collection.

  Specified by:
    `clone` in interface `org.jfree.util.PublicCloneable`
  Overrides:
    `clone` in class `java.lang.Object`
  Returns:
    A clone.
  Throws:
    `java.lang.CloneNotSupportedException` - if the object cannot be cloned.