| /** |
| * @test /nodynamiccopyright/ |
| * @bug 7062745 7157798 |
| * @summary Negative test of conflicting same-name methods inherited from multiple interfaces when return type not compatible |
| * @compile/fail/ref=Test3.out -Werror -Xlint:unchecked -XDrawDiagnostics Test3.java |
| */ |
| |
| import java.util.List; |
| import java.io.Serializable; |
| |
| interface A { int m(); } |
| interface B { Integer m(); } |
| |
| interface AB extends A, B {} //error |
| |
| interface C { List<Integer> m(); } |
| interface D { List<Number> m(); } |
| |
| interface CD extends C, D {} //error |
| |
| interface E<T> { T m(); } |
| interface F<T> { T m(); } |
| interface G { Serializable m(); } |
| |
| interface BE extends B, E<Number> {} //ok, covariant return |
| |
| interface BE2<T> extends B, E<T> {} //error |
| |
| interface EF<T> extends E<T>, F<T> {} //ok |
| |
| interface EF2<U, V extends U> extends E<U>, F<V> {} //ok, covariant return |
| |
| interface EF3<U, V> extends E<U>, F<V> {} //error |
| |
| interface EG<T extends Number> extends E<T>, G {} //ok |
| |
| interface EFG<U extends Serializable, V extends Serializable> extends E<U>, F<V>, G {} //error |
