javax.swing
Class AbstractAction.ArrayTable

java.lang.Object
  javax.swing.AbstractAction.ArrayTable

All Implemented Interfaces:

Cloneable

Enclosing class:

AbstractAction

static class AbstractAction.ArrayTable

extends Object

implements Cloneable

Field Summary

private static int	ARRAY_BOUNDARY
private Object	table

Constructor Summary

(package private)

AbstractAction.ArrayTable()

Method Summary

void	clear() Removes all the mappings.
Object	clone() Creates and returns a copy of this object.
boolean	containsKey(Object key)
Object	get(Object key)
Object[]	getKeys(Object[] keys) Returns the keys of the table, or null if there are currently no bindings.
private void	grow()
private boolean	isArray()
void	put(Object key, Object value)
Object	remove(Object key)
private void	shrink()
int	size()
(package private) static void	writeArrayTable(ObjectOutputStream s, AbstractAction.ArrayTable table) Writes the passed in ArrayTable to the passed in ObjectOutputStream.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

table

private Object table

ARRAY_BOUNDARY

private static final int ARRAY_BOUNDARY

See Also:

Constant Field Values

Constructor Detail

AbstractAction.ArrayTable

AbstractAction.ArrayTable()

Method Detail

put

public void put(Object key,
                Object value)

get

public Object get(Object key)

size

public int size()

containsKey

public boolean containsKey(Object key)

remove

public Object remove(Object key)

clear

public void clear()

Removes all the mappings.

clone

public Object clone()

Description copied from class: Object

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

 x.clone() != x

will be true, and that the expression:

 x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

 x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

The method clone for class Object performs a specific cloning operation. First, if the class of this object does not implement the interface Cloneable, then a CloneNotSupportedException is thrown. Note that all arrays are considered to implement the interface Cloneable. Otherwise, this method creates a new instance of the class of this object and initializes all its fields with exactly the contents of the corresponding fields of this object, as if by assignment; the contents of the fields are not themselves cloned. Thus, this method performs a "shallow copy" of this object, not a "deep copy" operation.

The class Object does not itself implement the interface Cloneable, so calling the clone method on an object whose class is Object will result in throwing an exception at run time.

Overrides:

clone in class Object

Returns:

a clone of this instance.

See Also:

Cloneable

getKeys

public Object[] getKeys(Object[] keys)

Returns the keys of the table, or null if there are currently no bindings.

Parameters:

keys - array of keys

Returns:

an array of bindings

isArray

private boolean isArray()

grow

private void grow()

shrink

private void shrink()

writeArrayTable

static void writeArrayTable(ObjectOutputStream s,
                            AbstractAction.ArrayTable table)
                     throws IOException

Writes the passed in ArrayTable to the passed in ObjectOutputStream. The data is saved as an integer indicating how many key/value pairs are being archived, followed by the the key/value pairs. If table is null, 0 will be written to s.

This is a convenience method that ActionMap/InputMap and AbstractAction use to avoid having the same code in each class.

Throws:

IOException