Content/code assist
If activated from a valid line of code in an editor, this command opens a scrollable list of available code completions. Some tips for using code assist:
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If you select and then hover over a selected line in the content assist list, you can view Javadoc information for that line.
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You can use the mouse or the keyboard (Up Arrow, Down Arrow, Page Up, Page Down, Home, End, Enter) to navigate and select lines in the list.
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Clicking or pressing Enter on a selected line in the list inserts the selection into the editor.
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You can access specialized content assist features inside Javadoc comments.
Configure the behaviour of the content assist in the Editor preference page (Code Assist tab).
Java editor
Java Development Tools (JDT)
Using content/code assist
Edit menu
Java editor preferences
Templates preferences