The complexity of an expression is defined by the number of &&, || and condition ? ifTrue : ifFalse
operators it contains.
A single expression’s complexity should not become too high to keep the code readable.
Noncompliant code example
With the default threshold value of 3:
if (((condition1 && condition2) || (condition3 && condition4)) && condition5) { ... }
Compliant solution
if ( (myFirstCondition() || mySecondCondition()) && myLastCondition()) { ... }
Exceptions
No issue is reported inside equals methods, because it is common to compare all the fields of a class for equality inside this kind of
method.
