- java.lang.Object
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- javax.mail.Authenticator
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public abstract class Authenticator extends Object
The class Authenticator represents an object that knows how to obtain authentication for a network connection. Usually, it will do this by prompting the user for information.Applications use this class by creating a subclass, and registering an instance of that subclass with the session when it is created. When authentication is required, the system will invoke a method on the subclass (like getPasswordAuthentication). The subclass's method can query about the authentication being requested with a number of inherited methods (getRequestingXXX()), and form an appropriate message for the user.
All methods that request authentication have a default implementation that fails.
- Author:
- Bill Foote, Bill Shannon
- See Also:
Authenticator,Session.getInstance(java.util.Properties, javax.mail.Authenticator),Session.getDefaultInstance(java.util.Properties, javax.mail.Authenticator),Session.requestPasswordAuthentication(java.net.InetAddress, int, java.lang.String, java.lang.String, java.lang.String),PasswordAuthentication
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Constructor Summary
Constructors Constructor and Description Authenticator()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description protected StringgetDefaultUserName()protected PasswordAuthenticationgetPasswordAuthentication()Called when password authentication is needed.protected intgetRequestingPort()protected StringgetRequestingPrompt()protected StringgetRequestingProtocol()Give the protocol that's requesting the connection.protected InetAddressgetRequestingSite()
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Method Detail
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getRequestingSite
protected final InetAddress getRequestingSite()
- Returns:
- the InetAddress of the site requesting authorization, or null if it's not available.
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getRequestingPort
protected final int getRequestingPort()
- Returns:
- the port for the requested connection
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getRequestingProtocol
protected final String getRequestingProtocol()
Give the protocol that's requesting the connection. Often this will be based on a URLName.- Returns:
- the protcol
- See Also:
URLName.getProtocol()
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getRequestingPrompt
protected final String getRequestingPrompt()
- Returns:
- the prompt string given by the requestor
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getDefaultUserName
protected final String getDefaultUserName()
- Returns:
- the default user name given by the requestor
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getPasswordAuthentication
protected PasswordAuthentication getPasswordAuthentication()
Called when password authentication is needed. Subclasses should override the default implementation, which returns null.Note that if this method uses a dialog to prompt the user for this information, the dialog needs to block until the user supplies the information. This method can not simply return after showing the dialog.
- Returns:
- The PasswordAuthentication collected from the user, or null if none is provided.
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Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/mail/Authenticator.html
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References
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