Boxing of already boxed value

Last modified: 03 December 2024

Reports boxing of already boxed values.

This is a redundant operation since any boxed value will first be auto-unboxed before boxing the value again. If done inside an inner loop, such code may cause performance problems.

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.

BoxingBoxedValue
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 | Performance

Example:

Integer value = 1;
method(Integer.valueOf(value));

After the quick fix is applied:

Integer value = 1;
method(value);

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126