Method parameter always has the same value

Reports method parameters that always have the same constant value.

Example:

  static void printPoint(int x, int y) { // x is always 0
    System.out.println(x + ", " + y);
  }

  public static void main(String[] args) {
    printPoint(0, 1);
    printPoint(0, 2);
  }

The quick-fix inlines the constant value. This may simplify the method implementation.

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.

SameParameterValue

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 | Declaration redundancy

Use the Ignore when a quick-fix can not be provided option to suppress the inspections when:

the parameter is modified inside the method
the parameter value that is being passed is a reference to an inaccessible field (Java ony)
the parameter is a vararg (Java only)

Use the Maximal method visibility option to control the maximum visibility of methods to be reported.

Use the Minimal method usage count to report parameter field to specify the minimal number of method usages with the same parameter value.

Inspection options

Here you can find the description of settings available for the Method parameter always has the same value inspection, and the reference of their default values.

Ignore when a quick-fix cannot be provided

Default: Selected

Maximal method visibility

Default setting: protected

Other available settings:

public
package-private
private

Minimal method usage count to report parameter

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024