33 lines
1001 B
Java
33 lines
1001 B
Java
/*
|
|
* @test /nodynamiccopyright/
|
|
* @bug 8034223
|
|
* @summary Most-specific testing for nested functional interface types
|
|
* @compile/fail/ref=MostSpecific14.out -XDrawDiagnostics MostSpecific14.java
|
|
*/
|
|
class MostSpecific14 {
|
|
interface ToNumber { Number get(); }
|
|
interface ToToNumber { ToNumber get(); }
|
|
interface Factory<T> { T get(); }
|
|
|
|
void m1(Factory<Factory<Object>> f) {}
|
|
void m1(ToToNumber f) {}
|
|
|
|
void m2(Factory<Factory<Number>> f) {}
|
|
void m2(ToToNumber f) {}
|
|
|
|
void m3(Factory<Factory<Integer>> f) {}
|
|
void m3(ToToNumber f) {}
|
|
|
|
|
|
void test() {
|
|
m1(() -> () -> 23); // ok: choose ToToNumber
|
|
m2(() -> () -> 23); // error: ambiguous
|
|
m3(() -> () -> 23); // ok: choose Factory<Factory<Integer>>
|
|
|
|
m1(() -> this::getInteger); // ok: choose ToToNumber
|
|
m2(() -> this::getInteger); // error: ambiguous
|
|
m3(() -> this::getInteger); // ok: choose Factory<Factory<Integer>>
|
|
}
|
|
|
|
Integer getInteger() { return 23; }
|
|
} |