IntelliJ调试器有一个非常方便的特性，叫做“表达式计算”，这比eclipses pendant好得多。它有完整的代码完成，我认为它通常“更有用”。

我最近发现IntelliJ IDEA与Eclipse相比至少有两个优点。

如果试图在JSP代码编辑器中使用代码格式化，JSP脚本就会出错。Eclipse变得有点疯狂，它到处发布随机的代码片段。IDEA表现得很好。

另一件事是在JBoss服务器上部署应用程序的速度。IntelliJ正在替换JBoss tmp文件夹中的应用程序，因此重新部署非常快。Eclipse WTP正在替换deploy文件夹中的应用程序，而后者的持续时间要长得多。

Alt+Insert以列模式编辑文本。

首先，我喜欢intellij。它至少有100个eclipse所缺乏的特性。在重构、重命名、移动和其他已经提到过的东西时，我所说的可靠性和智能程度是任何夸张都无法形容的。

但是，有一件事intellij不允许，而eclipse做到了。它不允许在同一个vm下同时运行多个项目。

当你有独立的前端、中间、核心、代理项目时…等等，它们都必须相互交互，你不能同时快速修改和调试。我目前处理这个问题的唯一方法是使用ant脚本在依赖的项目中部署和更新jar，或者使用maven。

Eclipse允许在一个ide vm实例下调试多个项目。

有很多事情是idea用更简单的方法解决的，或者没有等价的方法:

Autocomplete actions: Doing ctrl+shift+a you can call any idea action from the keyboard without remembering its key combination... Think about gnome-do or launchy in windows, and you've got the idea! Also, this feature supports CamelCasing abbreviations ;) Shelf: Lets you keep easily some pieces of code apart, and then review them through the diff viewer. Local history: It's far better managed, and simpler. SVN annotations and history: simpler to inspect, and also you can easily see the history only for such a part of a whole source file. Autocomplete everywhere, such as the evaluate expression and breakpoint condition windows. Maven integration... much, much simpler, and well integrated. Refactors much closer to the hand, such as loops insertion, wrapping/casting, renaming, and add variables. Find much powerful and well organized. Even in big projects Much stable to work with several branches of a big project at the same time (as a former bugfixer of 1.5Gb by branch sources, and the need to working in them simultaneously, idea shown its rock-solid capabilities) Cleaner and simpler interface... And, simpler to use only with the keyboard, letting apart the need of using the mouse for lots of simple taks, saving you time and giving you more focus on the code... where it matters!

现在，作为开源的…Idea的用户群将呈指数级增长。

Idea 8.0有可爱的ctrl+shift+space x 2，可以完成以下自动完成:

 City city = customer.<ctrl-shift-space twice>

解析为

 City city = customer.getAddress().getCity();

通过任何级别的getter /setter。