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 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: Default: Selected

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	Java, 243.23126

Last modified: 03 December 2024