6840638: Project Coin: Improved Type Inference for Generic Instance Creation (aka 'diamond')
Summary: diamond operator implementation (simple approach)
Reviewed-by: jjg
/*
* @test /nodynamiccopyright/
* @bug 6840638
*
* @summary Project Coin: Improved Type Inference for Generic Instance Creation (aka 'diamond')
* @author mcimadamore
* @compile/fail/ref=Neg04.out Neg04.java -source 1.7 -XDrawDiagnostics
*
*/
class Neg04 {
void test() {
class Foo<V extends Number> {
Foo(V x) {}
<Z> Foo(V x, Z z) {}
}
Foo<String> n1 = new Foo<>(""); //new Foo<Integer> created
Foo<? extends String> n2 = new Foo<>(""); //new Foo<Integer> created
Foo<?> n3 = new Foo<>(""); //new Foo<Object> created
Foo<? super String> n4 = new Foo<>(""); //new Foo<Object> created
Foo<String> n5 = new Foo<>(""){}; //new Foo<Integer> created
Foo<? extends String> n6 = new Foo<>(""){}; //new Foo<Integer> created
Foo<?> n7 = new Foo<>(""){}; //new Foo<Object> created
Foo<? super String> n8 = new Foo<>(""){}; //new Foo<Object> created
Foo<String> n9 = new Foo<>("", ""); //new Foo<Integer> created
Foo<? extends String> n10 = new Foo<>("", ""); //new Foo<Integer> created
Foo<?> n11 = new Foo<>("", ""); //new Foo<Object> created
Foo<? super String> n12 = new Foo<>("", ""); //new Foo<Object> created
Foo<String> n13 = new Foo<>("", ""){}; //new Foo<Integer> created
Foo<? extends String> n14 = new Foo<>("", ""){}; //new Foo<Integer> created
Foo<?> n15 = new Foo<>("", ""){}; //new Foo<Object> created
Foo<? super String> n16 = new Foo<>("", ""){}; //new Foo<Object> created
}
}