IntelliJ IDEA find matching parenthesis / bracket

use CTRL-W to expand the selection within a bracket, use repeatedly if needed to select further out, then use the arrows.

• You can use Ctrl + [ and Ctrl + ] to navigate to a code block's start and end.

• You can also use Ctrl + Shift + M to navigate between the start and end of a code block.

On Mac, you can use Option + Cmd +[ and Option + Cmd + ], and Ctrl + M

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Source: https://www.jetbrains.com/help/idea/2016.2/navigating-to-braces.html