11 interface Foo1 { int getAge(String s);} |
11 interface Foo1 { int getAge(String s);} |
12 interface Bar1 { Integer 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 |
13 interface Foo1Bar1 extends Foo1, Bar1 {} //types Bar1 and Foo1 are incompatible; both define getAge(String), but with unrelated return types |
14 |
14 |
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 |
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 |
16 interface ABC extends A, B, C {} //ok - raw override |
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 |
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 |
18 |
18 |
19 interface Foo2<T> { void m(T arg);} |
19 interface Foo2<T> { void m(T arg);} |
20 interface Bar2<S> { void m(S 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 |
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 |