Object instantiation inside 'equals()' or 'hashCode()'

Reports construction of (temporary) new objects inside equals(), hashCode(), compareTo(), and Comparator.compare() methods.

Besides constructor invocations, new objects can also be created by autoboxing or iterator creation inside a foreach statement. This can cause performance problems, for example, when objects are added to a Set or Map, where these methods will be called often.

The inspection will not report when the objects are created in a throw or assert statement.

Example:

In this example, two additional arrays are created inside equals(), usages of age field require boxing, and name + age implicitly creates a new string.