# Class RealmCallback

java.lang.Object
javax.security.auth.callback.TextInputCallback
javax.security.sasl.RealmCallback

All Implemented Interfaces:
  `Serializable, Callback`

public class RealmCallback extends TextInputCallback
This callback is used by `SaslClient` and `SaslServer` to retrieve realm information.

Since:
  1.5
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `RealmCallback(String prompt)`
  Constructs a `RealmCallback` with a prompt.
  `RealmCallback(String prompt, String defaultRealmInfo)`
  Constructs a `RealmCallback` with a prompt and default realm information.

- ## Method Summary

  ### Methods declared in class TextInputCallback

  `getDefaultText, getPrompt, getText, setText`
  Modifier and Type
  Method
  Description
  `String`
  `getDefaultText()`
  Get the default text.
  `String`
  `getPrompt()`
  Get the prompt.
  `String`
  `getText()`
  Get the retrieved text.
  `void`
  `setText(String text)`
  Set the retrieved text.

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`
  Modifier and Type
  Method
  Description
  `protected Object`
  `clone()`
  Creates and returns a copy of this object.
  `boolean`
  `equals(Object obj)`
  Indicates whether some other object is "equal to" this one.
  `protected void`
  `finalize()`
  Deprecated, for removal: This API element is subject to removal in a future version.
  Finalization is deprecated and subject to removal in a future release.
  `final Class<?>`
  `getClass()`
  Returns the runtime class of this `Object`.
  `int`
  `hashCode()`
  Returns a hash code value for this object.
  `final void`
  `notify()`
  Wakes up a single thread that is waiting on this object's monitor.
  `final void`
  `notifyAll()`
  Wakes up all threads that are waiting on this object's monitor.
  `String`
  `toString()`
  Returns a string representation of the object.
  `final void`
  `wait()`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
  `final void`
  `wait(long timeoutMillis)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
  `final void`
  `wait(long timeoutMillis, int nanos)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

- ## Constructor Details

  - ### RealmCallback

    public RealmCallback(String prompt)
    Constructs a `RealmCallback` with a prompt.
    Parameters:
      `prompt` - The non-null prompt to use to request the realm information.
    Throws:
      `IllegalArgumentException` - If `prompt` is null or the empty string.

  - ### RealmCallback

    public RealmCallback(String prompt, String defaultRealmInfo)
    Constructs a `RealmCallback` with a prompt and default realm information.
    Parameters:
      `prompt` - The non-null prompt to use to request the realm information.
      `defaultRealmInfo` - The non-null default realm information to use.
    Throws:
      `IllegalArgumentException` - If `prompt` is null or the empty string, or if `defaultRealm` is empty or null.