回答的序言:我对Eclipse的使用是有限的。我们需要一个Java IDE在Windows和Mac上都能运行，而Mac的移植速度越来越慢。这是几年前的事了，我相信现在没问题了。但这正是我们转向IntelliJ的原因，我们对它很满意。

现在是我的答案:我还没有看到提到的一个很大的区别是，IntelliJ/Jet Brains的技术支持更好。我们向JetBrains发送电子邮件，并在不到一个小时内得到明确的答复。寻找Eclipse问题的答案通常会得到“你这个愚蠢的白痴”的答案(通常是一小部分回答)，同时还有大量有见解的、有帮助的回答。但要得到真正的答案还需要一些梳理。

结构搜索和替换。

例如，搜索如下内容:

  System.out.println($string$ + $expr$);

其中$string$是一个文字，$expr$是my.package.and.Class类型的表达式，然后替换为:

  $expr$.inspect($string$);

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。

目前，它是唯一一个可以将标签撕下到另一个窗口。当你有更多的屏幕时很方便。

数据流分析:如本文所述，过程间的反向流分析和正向流分析。我的经验是基于Community Edition，它在数据流分析方面做得相当好。当代码非常复杂时，它在少数情况下会失败(拒绝做任何事情)。

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。