FailedLoginException (Java SE 23 & JDK 23)
Description: declaration: module: java.base, package: javax.security.auth.login, class: FailedLoginException
Keywords: javax.security.auth.login.FailedLoginException class

# Class FailedLoginException

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.security.GeneralSecurityException
javax.security.auth.login.LoginException
javax.security.auth.login.FailedLoginException

All Implemented Interfaces:
  `Serializable`

public class FailedLoginException extends LoginException
Signals that user authentication failed.

This exception is thrown by LoginModules if authentication failed. For example, a `LoginModule` throws this exception if the user entered an incorrect password.

Since:
  1.4
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `FailedLoginException()`
  Constructs a FailedLoginException with no detail message.
  `FailedLoginException(String msg)`
  Constructs a FailedLoginException with the specified detail message.

- ## Method Summary

  ### Methods declared in class java.lang.Throwable

  `addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

  ### Methods declared in class java.lang.Object

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

- ## Constructor Details

  - ### FailedLoginException

    public FailedLoginException()
    Constructs a FailedLoginException with no detail message. A detail message is a String that describes this particular exception.

  - ### FailedLoginException

    public FailedLoginException(String msg)
    Constructs a FailedLoginException with the specified detail message. A detail message is a String that describes this particular exception.
    Parameters:
      `msg` - the detail message.