Simplifiable collector
Reports collectors that can be simplified.
In particular, some cascaded groupingBy() collectors can be expressed by using a simpler toMap() collector, which is also likely to be more performant.
Example:
Collectors.groupingByConcurrent(String::length, Collectors.collectingAndThen(Collectors.maxBy(String::compareTo), Optional::get));
After the quick-fix is applied:
Collectors.toConcurrentMap(String::length, Function.identity(), BinaryOperator.maxBy(String::compareTo));
This inspection only reports if the language level of the project or module is 8 or higher.
New in 2017.1
Inspection Details | |
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Available in: | IntelliJ IDEA 2023.3, Qodana for JVM 2023.3 |
Plugin: | Java, 233.SNAPSHOT |
Last modified: 13 July 2023