在 Eclipse 中使用 Java 的默认包
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Using Java's default package in Eclipse
提问by Makoto
In Eclipse, when I start a new Project, I go through the wizard, and when I get to writing my first class for that project I am asked to select a package. Sometimes out of laziness I just choose the default package.
在 Eclipse 中，当我开始一个新项目时，我会通过向导，当我开始为那个项目编写我的第一个类时，我被要求选择一个包。有时出于懒惰，我只是选择默认包。
The wizard warns me this is discouraged. Even if I ignore the warnings I never have any problems with the application due to this. Or at least, so far I have never had any problem.
向导警告我这是不鼓励的。即使我忽略了警告，我的应用程序也不会因此出现任何问题。或者至少，到目前为止我从来没有遇到过任何问题。
So why does Eclipse want me to create a new package?
那么为什么 Eclipse 要我创建一个新包呢？
回答by Makoto
Eclipse, and most other IDEs, are geared towards large projects. Hobbyist programming and small-scale assignments can get by in IDEs often, but be aware that the general assumption would be for larger projects - anything between 10 and 5,000+ classes.
Eclipse 和大多数其他 IDE 面向大型项目。业余爱好者编程和小规模作业通常可以在 IDE 中完成，但请注意，一般假设适用于较大的项目 - 10 到 5,000 多个类之间的任何项目。
There is also a chance that you create a class which has a similar name to something in the Java API - for example:
您也有可能创建一个与 Java API 中名称相似的类 - 例如：
Ambiguity in instantiating the class (throw new MarshalException();) if both classes exist on the same classpath is a compilation error.
throw new MarshalException();如果两个类都存在于同一类路径中，则实例化类 ( ) 时的歧义是编译错误。
回答by Jason Dunkelberger
You actually can't import classes from the default package. I understand it's allowed as a convenience or for very small (one class file) tasks.
您实际上无法从默认包中导入类。我知道这是为了方便或非常小的（一个类文件）任务而被允许的。
