Guava's functional primitives can be replaced with Java

Reports usages of Guava's functional primitives that can be migrated to standard Java API calls.

For example, the inspection reports usages of classes and interfaces like FluentIterable, Optional, Function, Predicate, or Supplier.

Example:

  ImmutableList<String> results = FluentIterable.from(List.of(1, 2, 3)).transform(Object::toString).toList();

After the quick-fix is applied:

  List<String> results = List.of(1, 2, 3).stream().map(Object::toString).collect(Collectors.toList());

The quick-fix may change the semantics. Some lazy-evaluated Guava's iterables can be transformed to eager-evaluated.

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.

Guava

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.

This inspection depends on the Java feature 'Stream and Optional API' which is available since Java 8.

Inspection options

Here you can find the description of settings available for the Guava's functional primitives can be replaced with Java inspection, and the reference of their default values.

Report variables: Default: Selected
Report method chains: Default: Selected
Report return types: Default: Selected
Erase @javax.annotations.Nullable from converted functions: Default: Selected

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024