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I was wondering if there is a way to see the description/help of a method on the list of suggestions like in Eclipse. And going to the class and looking up the help manually isn't an option.
Example in Eclipse:
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In IntelliJ IDEA, you can see where and how symbols, such as tags, classes, fields, methods, or functions are defined in your project. For this purpose, the IDE features the Quick Definition popup. To view definition of a symbol, select it in the editor and press Ctrl+Shift+I (or click View | Quick Definition).
In IDEA, clicks on the method name, press CTRL + Q to show the method signature on a pop up. Alternatively, press CTRL + P to show the available parameters.
From the main menu, select Tools | Generate JavaDoc. In the dialog that opens, select a scope — a set of files or directories for which you want to generate the reference, and set the output directory where the generated documentation will be placed.
In IntelliJ IDEA you can do it by calling the Method Hierarchy action, available via Ctrl + Shift + H (Cmd + Shift + H for OS X). This action may help you figure out which of the classes you may want to navigate to.
If you select an item in the suggestion list and want to see its documentation, press Ctrl+Q (Q = quick information) or Alt+Button2 Click. The popup will be updated automatically if you select another item in the list.
Similar you can press Ctrl+Shift+I to see its quick definition, that is its code. Very handy.
For that to work, add the path to the JavaDoc in the project settings. Here I have set it to the online Java 7 documentation:
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Press F1 and IntelliJ will present a popup with detailed information about whatever the current cursor is on. For a method, that will include things like a general description, parameters, and errors thrown.
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