CODEWITHSUNDEEP
javaintellij-ideajava-11
Jewels
Jewels

Reputation: 1036

Variable extraction to var in IntelliJ IDEA

When extracting a variable (Ctrl+Alt+V) in IntelliJ IDEA with Java 11, I would like for the default to be that it is extracted to a var instead of the verbose type.

var home = "127.0.0.1";

instead of

String home = "127.0.0.1";

Is there a way to configure IntelliJ IDEA to do this?

Upvotes: 37

Views: 4294

Answers (3)

Jewels
Jewels

Reputation: 1036

JetBrains added this feature to IntelliJ 2019.1.1.

variable extraction in IntelliJ 2019.1.1

Upvotes: 12

Tamilselvan
Tamilselvan

Reputation: 113

As mentioned in here, it can be enabled as follows from 2023.2 version onwards. Enable var by default

Upvotes: 3

Mikhail Kholodkov
Mikhail Kholodkov

Reputation: 25136

Update

Feature has been implemented and available since IntelliJ IDEA 2019.1 release

https://youtrack.jetbrains.com/issue/IDEA-179176

Fix versions 2019.1 (191.6183.87)

This feature hasn't been adopted by IntelliJ IDEA yet.

I've submitted an explicit feature request at JetBrains' bug tracking system: https://youtrack.jetbrains.com/issue/IDEA-206367

Although, other similar tickets which have been submitted before, are not yet completed:


Alternative

However, you can somewhat achieve the desired behavior by using Custom Postfix Templates plugin, which allows to define your own custom postfix completion templates.

Statement like this:

enter image description here

Will be converted to:

enter image description here

To achieve this:

  • 1) Install Custom Postfix Templates plugin via Settings → Plugins → Browse Repositories.
  • 2) Press Shift+Alt+P (or go to menu Tools → Custom Postfix Templates → Edit Templates of Current Language) to open the custom postfix templates for the programming language in your current editor.

  • 3) Add the following template:

    .var : Extracts variable as inferred 'var' type
    NON_VOID                 →  var $VAR:suggestVariableName()$ = $expr$;

Restart IntelliJ and you're good to go.

Note. Existing postfix completion named 'var' exists in IntelliJ by default, you might want to disable the existing one (via Settings → Editor → General → Postfix Completion) or find another name for a new one.

Upvotes: 9

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