Unnecessary 'this' qualifier

Reports unnecessary this qualifier.

Using this to disambiguate a code reference is discouraged by many coding styles and may easily become unnecessary via automatic refactorings.

Example:

  class Foo {
    int x;
    void foo() {
      this.x = 2;
    }
  }

After the quick-fix is applied:

  class Foo {
    int x;
    void foo() {
      x = 2;
    }
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

UnnecessaryThis

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Code style issues

Use the inspection settings to ignore assignments to fields. For instance, this.x = 2; won't be reported, but int y = this.x; will be.

Inspection options

Here you can find the description of settings available for the Unnecessary 'this' qualifier inspection, and the reference of their default values.

Ignore field assignments: Default value:
Not selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection UnnecessaryThis

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025