Class CommandUsageException

All Implemented Interfaces:
Serializable

public class CommandUsageException extends CommandFailedException
A specialization of CommandFailedException thrown when a command fails because it is called incorrectly.

This exception is an indication of a developer error, not a user error. In practice, these exceptions should never occur during normal operation.

Developer note: When considering the command against the usage message, be aware that representing the command as a single String may conceal subtle usage issues. For example, when providing multiple arguments to a command builder via its argument(String), providing multiple arguments in a single call separated by spaces will result in the arguments not being received correctly by the command when it is executed but will produce the same String representation. For example, both of the following will produce the same String:


     builder.command("command").argument("a b").build(...).call();

     builder.command("command").argument("a").argument("b").build(...).call();
 
However, the executed command will receive different arguments ("a b" and ["a", "b"], respectively). If the command arguments appear to be valid based on the usage message, double-check how they are provided.
See Also:
  • Constructor Details

    • CommandUsageException

      public CommandUsageException(@Nonnull KeyedMessage message, @Nonnull String command, @Nonnull String usage)
  • Method Details

    • getCommand

      @Nonnull public String getCommand()
      Returns:
      the command as it was executed
    • getUsage

      @Nonnull public String getUsage()
      Returns:
      the usage message