存储在JAR文件中的包可以选择进行密封，以增强版本一致性和安全性。

Packages stored in JAR files can be optionally sealed to enforce version consistency and security.

youdao

密封JAR文件中的一个包意味着在这个包中定义的所有类都必须在同一个JAR文件中找到。

Sealing a package within a JAR file means that all classes defined in that package must be found in the same JAR file.

youdao

密封一个包意味着包中的所有类都必须在同一JAR文件中找到。

Sealing a package means that all classes defined in that package must be found in the same JAR file.

youdao