Package io.helidon.common

Common utilities for Helidon projects.

See Also:

Builder, Errors

Interface Summary

Interface	Description
Builder<T>	Interface for builders, to be able to accept a builder in addition to an instance.
LazyValue<T>	A typed supplier that wraps another supplier and only retrieves the value on the first request to Supplier.get(), caching the value for all subsequent invocations.
Prioritized	Interface to define that this class is a class with priority.

Class Summary

Class	Description
CollectionsHelper	A set of static methods similar to Java9's List.of(), Set.of() and Map.of().
Errors	Errors utility used to file processing messages (e.g.
Errors.Collector	A collector of Errors.ErrorMessages.
Errors.ErrorMessage	Error message with a severity and a source.
GenericType<T>	Represents a full type including generics declaration, to avoid information loss due to type erasure.
HelidonConsoleHandler	A StreamHandler that writes to standard out and uses a HelidonConsoleHandler.ThreadFormatter for formatting.
HelidonConsoleHandler.ThreadFormatter	A SimpleFormatter that replaces all occurrences of "!thread!" with the current thread.
InputStreamHelper	A set of static utility methods for InputStream.
OptionalHelper<T>	A wrapper on top of Optional to replicate some of the new Java9 methods.
StackWalker	A dummy replicate of Java9's StackWalker.
Version	Simple class to provide version information.

Enum Summary

Enum	Description
Severity	Severity of an event.
StackWalker.Option	Option for future partial compatibility with Java9.

Exception Summary

Exception	Description
Errors.ErrorMessagesException	Exception used by Errors.checkValid() thrown in case there are fatal messages.