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Class ChoiceCallback

java.lang.Object

javax.security.auth.callback.ChoiceCallback

All Implemented Interfaces:: Serializable, Callback

Direct Known Subclasses:: RealmChoiceCallback

public class ChoiceCallback extends Object implements Callback, Serializable

Underlying security services instantiate and pass a ChoiceCallback to the handle method of a CallbackHandler to display a list of choices and to retrieve the selected choice(s).

Since:

1.4

See Also:

Constructor Summary

Constructor	Description
`ChoiceCallback(String prompt, String[] choices, int defaultChoice, boolean multipleSelectionsAllowed)`	Construct a `ChoiceCallback` with a prompt, a list of choices, a default choice, and a boolean specifying whether multiple selections from the list of choices are allowed.

Method Summary

Modifier and Type	Method	Description
`boolean`	`allowMultipleSelections()`	Get the boolean determining whether multiple selections from the `choices` list are allowed.
`String[]`	`getChoices()`	Get the list of choices.
`int`	`getDefaultChoice()`	Get the defaultChoice.
`String`	`getPrompt()`	Get the prompt.
`int[]`	`getSelectedIndexes()`	Get the selected choices.
`void`	`setSelectedIndex(int selection)`	Set the selected choice.
`void`	`setSelectedIndexes(int[] selections)`	Set the selected choices.

Methods declared in class java.lang.Object

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

Constructor Details

ChoiceCallback

public ChoiceCallback(String prompt, String[] choices, int defaultChoice, boolean multipleSelectionsAllowed)

Construct a ChoiceCallback with a prompt, a list of choices, a default choice, and a boolean specifying whether multiple selections from the list of choices are allowed.

Parameters:: prompt - the prompt used to describe the list of choices.; choices - the list of choices. The array is cloned to protect against subsequent modification.; defaultChoice - the choice to be used as the default choice when the list of choices are displayed. This value is represented as an index into the choices array.; multipleSelectionsAllowed - boolean specifying whether multiple selections can be made from the list of choices.
Throws:: IllegalArgumentException - if prompt is null, if prompt has a length of 0, if choices is null, if choices has a length of 0, if any element from choices is null, if any element from choices has a length of 0 or if defaultChoice does not fall within the array boundaries of choices.

Method Details

getPrompt

public String getPrompt()

Get the prompt.

Returns:: the prompt.

getChoices

public String[] getChoices()

Get the list of choices.

Returns:: a copy of the list of choices.

getDefaultChoice

public int getDefaultChoice()

Get the defaultChoice.

Returns:: the defaultChoice, represented as an index into the choices list.

allowMultipleSelections

public boolean allowMultipleSelections()

Get the boolean determining whether multiple selections from the choices list are allowed.

Returns:: whether multiple selections are allowed.

setSelectedIndex

public void setSelectedIndex(int selection)

Set the selected choice.

Parameters:

selection - the selection represented as an index into the choices list.

See Also:

setSelectedIndexes

public void setSelectedIndexes(int[] selections)

Set the selected choices.

Parameters:

selections - the selections represented as indexes into the choices list. The array is cloned to protect against subsequent modification.

Throws:

UnsupportedOperationException - if multiple selections are not allowed, as determined by allowMultipleSelections.

See Also:

getSelectedIndexes

public int[] getSelectedIndexes()

Get the selected choices.

Returns:

a copy of the selected choices, represented as indexes into the choices list.

See Also:

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/javax/security/auth/callback/ChoiceCallback.html