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Statement can be replaced with 'assert' or 'Objects.requireNonNull'

Reports if statements that throw only java.lang.Throwable from a then branch and do not have an else branch. Such statements can be converted to more compact assert statements.

The inspection also reports Guava's Preconditions.checkNotNull(). They can be replaced with a Objects.requireNonNull() call for which a library may not be needed.


if (x == 2) throw new RuntimeException("fail"); if (y == null) throw new AssertionError(); Preconditions.checkNotNull(z, "z");

After the quick-fix is applied:

assert x != 2 : "fail"; Objects.requireNonNull(y); Objects.requireNonNull(z, "z");

By default, this inspection provides a quick-fix in the editor without code highlighting.

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Java, 233.SNAPSHOT

Last modified: 13 July 2023