java-topology/test/langtools/tools/javac/lambda/FunctionalInterfaceAnno.java
russell@unturf.com 0a580b313d undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

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Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00

33 lines
871 B
Java

/*
* @test /nodynamiccopyright/
* @summary smoke test for functional interface annotation
* @compile/fail/ref=FunctionalInterfaceAnno.out -XDrawDiagnostics FunctionalInterfaceAnno.java
*/
class FunctionalInterfaceAnno {
@FunctionalInterface
static class A { } //not an interface
@FunctionalInterface
static abstract class B { } //not an interface
@FunctionalInterface
enum C { } //not an interface
@FunctionalInterface
@interface D { } //not an interface
@FunctionalInterface
interface E { } //no abstracts
@FunctionalInterface
interface F { default void m() { } } //no abstracts
@FunctionalInterface
interface G { String toString(); } //no abstracts
@FunctionalInterface
interface H { void m(); void n(); } //incompatible abstracts
@FunctionalInterface
interface I { void m(); } //ok
}