'equals()' expression replaceable by 'Objects.equals()' expression

Reports expressions that can be replaced with a call to java.util.Objects#equals.

Example:

  void f(Object a, Object b) {
    boolean result = a != null && a.equals(b);
  }

After the quick-fix is applied:

  void f(Object a, Object b) {
    boolean result = Objects.equals(a, b);
  }

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.

EqualsReplaceableByObjectsCall

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.

Replacing expressions like a != null && a.equals(b) with Objects.equals(a, b) slightly changes the semantics. Use the Highlight expressions like 'a != null && a.equals(b)' option to enable or disable this behavior.

This inspection only reports if the language level of the project or module is 7 or higher.

Inspection options

Here you can find the description of settings available for the 'equals()' expression replaceable by 'Objects.equals()' expression inspection, and the reference of their default values.

Highlight expressions like 'a != null && a.equals(b)': Not selected

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