# 程序包的使用
org.springframework.lang

- 使用org.springframework.lang的程序包
  程序包 | 说明
  --- | ---
  org.springframework.core | Provides basic classes for exception handling and version detection, and other core helpers that are not specific to any part of the framework.
  org.springframework.core.annotation | Core support package for annotations, meta-annotations, and composed annotations with attribute overrides.
  org.springframework.core.codec | `Encoder` and `Decoder` abstractions to convert between a reactive stream of bytes and Java objects.
  org.springframework.core.convert | Type conversion system API.
  org.springframework.core.convert.converter | SPI to implement Converters for the type conversion system.
  org.springframework.core.convert.support | Default implementation of the type conversion system.
  org.springframework.core.env | Spring's environment abstraction consisting of bean definition profile and hierarchical property source support.
  org.springframework.core.io | Generic abstraction for (file-based) resources, used throughout the framework.
  org.springframework.core.io.buffer | Generic abstraction for working with byte buffer implementations.
  org.springframework.core.io.support | Support classes for Spring's resource abstraction.
  org.springframework.core.serializer | Root package for Spring's serializer interfaces and implementations.
  org.springframework.core.style | Support for styling values as Strings, with ToStringCreator as central class.
  org.springframework.core.task | This package defines Spring's core TaskExecutor abstraction, and provides SyncTaskExecutor and SimpleAsyncTaskExecutor implementations.
  org.springframework.core.task.support | Support classes for Spring's TaskExecutor abstraction.
  org.springframework.core.type | Core support package for type introspection.
  org.springframework.core.type.classreading | Support classes for reading annotation and class-level metadata.
  org.springframework.core.type.filter | Core support package for type filtering (e.g. for classpath scanning).
  org.springframework.util | Miscellaneous utility classes, such as String manipulation utilities, a Log4J configurer, and a state holder for paged lists of objects.
  org.springframework.util.comparator | Useful generic `java.util.Comparator` implementations, such as an invertible comparator and a compound comparator.
  org.springframework.util.concurrent | Useful generic `java.util.concurrent.Future` extension.
  org.springframework.util.xml | Miscellaneous utility classes for XML parsing and transformation, such as error handlers that log warnings via Commons Logging.

- org.springframework.core使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.annotation使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.codec使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.convert使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.convert.converter使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.convert.support使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.env使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.io使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.io.buffer使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.io.support使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.serializer使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.style使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.task使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.task.support使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.type使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.type.classreading使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.core.type.filter使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.util使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.util.comparator使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.util.concurrent使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.

- org.springframework.util.xml使用的org.springframework.lang中的类
  类和说明
  Nullable A common Spring annotation to declare that annotated elements can be `null` under some circumstance.