Suspicious integer division assignment

Reports assignments whose right side is a division that shouldn't be truncated to integer.

While occasionally intended, this construction is often buggy.

Example:

int x = 18;
x *= 3/2; // doesn't change x because of the integer division result

This code should be replaced with:

int x = 18;
x *= 3.0/2;

In the inspection options, you can disable warnings for suspicious but possibly correct divisions, for example, when the dividend can't be calculated statically.

void calc(int d) {
   int x = 18;
   x *= d/2;
}

New in 2019.2

Inspection options

Option	Type	Default
Report suspicious but possibly exact divisions	Checkbox	true

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023