Inspectopedia
 
2024.3

Stream API call chain can be replaced with loop

Info
New
Last modified: 03 December 2024

Reports Stream API chains, Iterable.forEach(), and Map.forEach() calls that can be automatically converted into classical loops. This can help to downgrade for backward compatibility with earlier Java versions.

Example:

After the quick-fix is applied:

Note that sometimes this inspection might cause slight semantic changes. Special care should be taken when it comes to short-circuiting, as it's not specified how many elements will be actually read when the stream short-circuits.

Configure the inspection:

Use the Iterate unknown Stream sources via Stream.iterator() option to suggest conversions for streams with unrecognized source. In this case, iterator will be created from the stream. For example, when checkbox is selected, the conversion will be suggested here:

In this case, the result will be as follows:

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

New in 2017.1