picocli

## Interface CommandLine.IExceptionHandler

- All Known Implementing Classes:
    CommandLine.DefaultExceptionHandler
  Enclosing class:
    CommandLine

  Deprecated.
  Use `CommandLine.IExceptionHandler2` instead.

      @Deprecated
      public static interface CommandLine.IExceptionHandler

  Represents a function that can handle a `ParameterException` that occurred while parsing the command line arguments. This is a functional interface whose functional method is `handleException(CommandLine.ParameterException, PrintStream, CommandLine.Help.Ansi, String...)`.

  Implementations of this function can be passed to the `CommandLine::parseWithHandlers` methods to handle situations when the command line could not be parsed.

  Since:
    2.0
  See Also:
    `CommandLine.DefaultExceptionHandler`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `List<Object>` | `handleException(CommandLine.ParameterException ex, PrintStream out, CommandLine.Help.Ansi ansi, String... args)` Deprecated. Handles a `ParameterException` that occurred while parsing the command line arguments and optionally returns a list of results.

- - ### Method Detail

    - #### handleException

          List<Object> handleException(CommandLine.ParameterException ex,
                                       PrintStream out,
                                       CommandLine.Help.Ansi ansi,
                                       String... args)

      Deprecated.
      Handles a `ParameterException` that occurred while parsing the command line arguments and optionally returns a list of results.
      Parameters:
        `ex` - the ParameterException describing the problem that occurred while parsing the command line arguments, and the CommandLine representing the command or subcommand whose input was invalid
        `out` - the `PrintStream` to print help to if requested
        `ansi` - for printing help messages using ANSI styles and colors
        `args` - the command line arguments that could not be parsed
      Returns:
        a list of results, or an empty list if there are no results

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