Shiro IncorrectCredentialsException: Handling Invalid Credentials in Apache Shiro

The 'IncorrectCredentialsException' is an exception that can be thrown in the Apache Shiro framework when the provided credentials (such as username or password) are incorrect. This exception indicates that the authentication process has failed due to invalid credentials.

Here is an example of how this exception can be thrown and caught in a Shiro application:

try {
    // Perform authentication process
    UsernamePasswordToken token = new UsernamePasswordToken(username, password);
    Subject currentUser = SecurityUtils.getSubject();
    currentUser.login(token);
} catch (IncorrectCredentialsException e) {
    // Handle incorrect credentials exception
    System.out.println('Invalid username or password');
}

In this example, if the provided username or password is incorrect, the 'IncorrectCredentialsException' will be thrown and caught in the catch block. You can then handle the exception according to your application's requirements.