class W { | |
Object f() { | |
return 0; | |
} | |
} | |
class WW extends W { | |
String f() { | |
return null; | |
} | |
} | |
interface IQ { | |
void f(); | |
} | |
<error descr="'f()' in 'WW' clashes with 'f()' in 'IQ'; attempting to use incompatible return type">class WWW extends WW implements IQ</error> { | |
} | |