Numeric overflow

Reports expressions that overflow during computation. Usually, this happens by accident and indicates a bug. For example, a wrong type is used or a shift should be done in an opposite direction .

Examples:

  float a = 1.0f/0.0f;
  long b = 30 * 24 * 60 * 60 * 1000;
  long c = 1000L &lt;&lt; 62;

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.

NumericOverflow

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 | Numeric issues

Inspection ID: NumericOverflow

Inspection options

Here you can find the description of settings available for the Numeric overflow inspection, and the reference of their default values.

Ignore '<<' operation which results in negative value

Option ID:

ignoreLeftShiftWithNegativeResult

Default value:

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 NumericOverflow

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

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025