How to automatically convert if-else if statement

问题:

Is there a hot key or easy way to replace an if-else if statement with a switch in IntelliJ? I would prefer not to manually convert the if-else if statement to a switch. I am looking to be able to highlight the if-else if statement and press a combination of keys or use a menu button.

回答1:

Update: as @christopheml pointed out in comments on another answer, "Replace If with Switch" seems to have disappeared in IntelliJ 2018.1. A bug has been filed here.

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There are IntelliJ intentions named "Replace If with Switch" and "Replace Switch with If". Check your preferences to see if those options are enabled. If so, I would expect that you would see a quickfix option (Option+Enter on Mac, Alt+Enter on Windows) whenever IntelliJ can automatically handle the conversion from one to the other.

回答2:

I just found out that you have to click on the first if, wait for the light bulb icon to appear and then choose Replace if with Switch.

回答3:

Android studio (intelliJ idea):

Put your cursor on the switch/if statement and:

mac: option + return

win: alt + enter

回答4:

If it doesn't offer the replacement anymore, its probably because disabled feature on "Intentions". (Android studio (IntelliJ))

Solution is simple:

• File > Settings > Editor > Intentions - Search: "replace switch"

or

• File > Settings - Search: "replace switch" > Editor > Intentions

and check the blank checkbox

回答5:

When selected if/switch in Eclipse, press Ctrl+1 or right-click -> Quick fix and suggestions will pop-up.