| Package | Description | 
|---|---|
| org.springframework.expression | Core abstractions behind the Spring Expression Language. | 
| org.springframework.expression.common | Common utility classes behind the Spring Expression Language. | 
| org.springframework.expression.spel | SpEL's central implementation package. | 
| org.springframework.expression.spel.ast | SpEL's abstract syntax tree. | 
| org.springframework.expression.spel.standard | SpEL's standard parser implementation. | 
| org.springframework.expression.spel.support | SpEL's default implementations for various core abstractions. |