为了更好地组织类，Java提供了包机制，用于区别类名的命名空间。 包的作用 1 把功能相似或相关的类或接口组织在同一个包中，方便类的查找和使用。 2 如同文件夹一样，包也采用了树形目录的存储方式。同一个包中的类名字是不同的，不同的包中的类的名字 ...

In a previous Java 101 tutorial, you learned how to better organize your code by declaring reference types (also known as classes and interfaces) as members of other reference types and blocks. I also ...

The Javadoc documentation for the Package class states: Package objects contain version information about the implementation and specification of a Java package. This versioning information is ...

Java is one of the most in-demand programming languages in the world and one of the two official programming languages used in Android development (the other being Kotlin). Developers familiar with ...