OnJava8-Examples/generics/SelfBoundingAndCovariantArguments.java
2015-09-07 11:44:36 -06:00

18 lines
477 B
Java

// generics/SelfBoundingAndCovariantArguments.java
// ©2015 MindView LLC: see Copyright.txt
interface SelfBoundSetter<T extends SelfBoundSetter<T>> {
void set(T arg);
}
interface Setter extends SelfBoundSetter<Setter> {}
public class SelfBoundingAndCovariantArguments {
void testA(Setter s1, Setter s2, SelfBoundSetter sbs) {
s1.set(s2);
// s1.set(sbs); // Error:
// set(Setter) in SelfBoundSetter<Setter>
// cannot be applied to (SelfBoundSetter)
}
}