Show Javadoc after pressing ctrl + space in Eclipse

Is there any way, to display Javadoc popup in Eclipse in "Netbeans way"? Example: When I write Str and press ctrl+space I'd like to see popup with proposals (String, StringMath, StringBuffer and so on) and another window with Javadoc for highli开发者_如何学Cghted proposal.

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Eclipse does support showing documentation of a highlighted element when you are using ctrl + space for autocompleting. However to have that working you need to do a little set up for the jre/jdk you are using to show eclipse where to look for the docs.

You can do that by checking out Preferences > Java > Installed JREs > then edit the JRE / JDK you've there. you basically have two options either setting the JavaDoc location or the Source attachement.