Fri, 30 Nov 2012 15:14:25 +0000
8004102: Add support for generic functional descriptors
Summary: Method references are allowed to have a generic functional interface descriptor target
Reviewed-by: jjg
1 /*
2 * @test /nodynamiccopyright/
3 * @bug 8003280
4 * @summary Add lambda tests
5 * This test is for identifying a non-SAM type: Having more than one methods due to inheritance, and none of them has a subsignature of all other methods
6 * @compile/fail/ref=NonSAM2.out -XDrawDiagnostics NonSAM2.java Helper.java
7 */
9 import java.util.List;
11 interface Foo1 { int getAge(String s);}
12 interface Bar1 { Integer getAge(String s);}
13 interface Foo1Bar1 extends Foo1, Bar1 {} //types Bar1 and Foo1 are incompatible; both define getAge(String), but with unrelated return types
15 interface AC extends A, C {} //name clash: getOldest(List<?>) in C and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other
16 interface ABC extends A, B, C {} //name clash: getOldest(List<?>) in C and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other
17 interface AD extends A, D {} //name clash: getOldest(List<Integer>) in D and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other
19 interface Foo2<T> { void m(T arg);}
20 interface Bar2<S> { void m(S arg);}
21 interface Foo2Bar2<T1, T2> extends Foo2<T1>, Bar2<T2> {} //name clash: m(S) in Bar and m(T) in Foo have the same erasure, yet neither overrides the other