Standard 'hashCode()' method can be used

Reports bitwise operations that can be replaced with a call to the Long.hashCode() or Double.hashCode() methods. It detects the construct (int)(x ^ (x >>> 32)) where x is a variable of type long or the result of a previous Double.doubleToLongBits() call. The replacement shortens the code, improving its readability.

Example:

int result = (int)(var ^ (var >>> 32));

After applying the quick-fix:

int result = Long.hashCode(var);

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.

UseHashCodeMethodInspection

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.

This inspection only reports if the language level of the project or module is 8 or higher.

New in 2024.1

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024