Thu, 17 Jan 2013 18:15:20 +0000
8005852: Treatment of '_' as identifier
Summary: warn when '_' is found in an identifier position
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 overloaded methods due to inheritance
6 * @compile/fail/ref=NonSAM3.out -XDrawDiagnostics NonSAM3.java Helper.java
7 */
9 import java.util.Collection;
10 import java.util.List;
12 public class NonSAM3 {
13 void method() {
14 //all of the following will have compile error: "the target type of a lambda conversion has multiple non-overriding abstract methods"
15 FooBar fb = (Number n) -> 100;
16 FooBar fb2 = (Integer i) -> 100;
17 DE de = (List<Integer> list) -> 100;
18 DE de2 = (List<?> list) -> 100;
19 DE de3 = (List list) -> 100;
20 DE de4 = (Collection<Integer> collection) -> 100;
21 DE de5 = (Collection<?> collection) -> 100;
22 DE de6 = (Collection collection) -> 100;
23 }
24 }