用于插入空检查的IntelliJ快捷方式？

Question

Is there a shortcut for inserting the code:

if (someParameter == null)
   throw NullPointerException("someParameter is null");

Answer 1

Try typing ifn followed by Tab. You can find more of those or define your own by going to the preferences and searching for "Live Templates".

Answer 2

IntelliJ IDEA provides another functionality, similar to shortcuts, that can help with your productivity, namely, Postfix completion .

If you want to insert a null check, type '.null' after the variable name, eg

and the null-checking code will be inserted automatically, eg

IntelliJ IDEA provides more handy postfix completions, which you can find in Preferences at Editor > General > Postfix Completion

Answer 3

现在有一种简单的方法（在版本13.1中），如下所述： http ： //blog.jetbrains.com/idea/2014/03/postfix-completion/

Answer 4

There isn't a template defined for that but you can easily create one. Just follow the steps described here .

Answer 5

If you are okay with having some annotations in your code then you could try the solution mentioned here . It does not solve the problem directly but if you have this kind of null checks at many places you can use this :)