| Interface | Description | 
|---|---|
| ArgumentUtils.Check | Functional interface the check a condition. | 
| PathMatcher | Interface for components that can match source strings against a specified pattern string. | 
| Toggleable | An interface for components or configurations that can be toggled on or off. | 
| Class | Description | 
|---|---|
| AntPathMatcher | PathMatcher implementation for Ant-style path patterns. | 
| ArgumentUtils | Utility methods for checking method argument values. | 
| ArgumentUtils.ArgumentCheck<T> | Allows producing error messages. | 
| ArrayUtils | Utility methods for working with arrays. | 
| CollectionUtils | Utility methods for working with  Collectiontypes | 
| StreamUtils | Utility methods for working with streams. | 
| StringUtils | Utility methods for Strings. |