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Functional expression can be folded

Reports method references or lambda expressions that point to a method of their own functional interface type and hence can be replaced with their qualifiers removing unnecessary object allocation.

Example:

SwingUtilities.invokeLater(r::run); SwingUtilities.invokeAndWait(() -> r.run());

After the quick-fix is applied:

SwingUtilities.invokeLater(r); SwingUtilities.invokeAndWait(r);

This inspection reports only if the language level of the project or module is 8 or higher.

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.16690

Last modified: 29 April 2024