InteliJ Shortcuts

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Open your browser with documentation for the element at the editor‘s caret

Press Shift+F1 (View | External Documentation). You must have the path to your browser set in the File | Settings | Web Browsers options and paths to documentation files added to your project (File | Project Structure...) to use this feature.

Auto Casting

When you need to cast an expression value to the required type the SmartType code completion will help you. For example, type

String s = (<caret is here> 

and press Ctrl+Shift+Space to see what happens, you will see

String s = (String) <caret is here now>

Code Template

InteliJ Shortcuts

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原文地址：http://www.cnblogs.com/moong/p/5153124.html