1 /*

     2  * @test /nodynamiccopyright/

     3  * @bug 6840638

     4  *

     5  * @summary  Project Coin: Improved Type Inference for Generic Instance Creation (aka 'diamond')

     6  * @author mcimadamore

     7  * @compile Pos03.java -source 1.7

     8  * @run main Pos03

     9  *

    10  */

    11 

    12 public class Pos03<U> {

    13 

    14     class Foo<V> {

    15         Foo(V x) {}

    16         <Z> Foo(V x, Z z) {}

    17     }

    18 

    19     void testSimple() {

    20         Foo<Integer> f1 = new Foo<>(1); //new Foo<Integer> created

    21         Foo<? extends Integer> f2 = new Foo<>(1); //new Foo<Integer> created

    22         Foo<?> f3 = new Foo<>(1); //new Foo<Object> created

    23         Foo<? super Integer> f4 = new Foo<>(1); //new Foo<Object> created

    24 

    25         Foo<Integer> f5 = new Foo<>(1){}; //new Foo<Integer> created

    26         Foo<? extends Integer> f6 = new Foo<>(1){}; //new Foo<Integer> created

    27         Foo<?> f7 = new Foo<>(1){}; //new Foo<Object> created

    28         Foo<? super Integer> f8 = new Foo<>(1){}; //new Foo<Object> created

    29 

    30         Foo<Integer> f9 = new Foo<>(1, ""); //new Foo<Integer> created

    31         Foo<? extends Integer> f10 = new Foo<>(1, ""); //new Foo<Integer> created

    32         Foo<?> f11 = new Foo<>(1, ""); //new Foo<Object> created

    33         Foo<? super Integer> f12 = new Foo<>(1, ""); //new Foo<Object> created

    34 

    35         Foo<Integer> f13 = new Foo<>(1, ""){}; //new Foo<Integer> created

    36         Foo<? extends Integer> f14 = new Foo<>(1, ""){}; //new Foo<Integer> created

    37         Foo<?> f15 = new Foo<>(1, ""){}; //new Foo<Object> created

    38         Foo<? super Integer> f16 = new Foo<>(1, ""){}; //new Foo<Object> created

    39     }

    40 

    41     void testQualified_1() {

    42         Foo<Integer> f1 = new Pos03<U>.Foo<>(1); //new Foo<Integer> created

    43         Foo<? extends Integer> f2 = new Pos03<U>.Foo<>(1); //new Foo<Integer> created

    44         Foo<?> f3 = new Pos03<U>.Foo<>(1); //new Foo<Object> created

    45         Foo<? super Integer> f4 = new Pos03<U>.Foo<>(1); //new Foo<Object> created

    46 

    47         Foo<Integer> f5 = new Pos03<U>.Foo<>(1){}; //new Foo<Integer> created

    48         Foo<? extends Integer> f6 = new Pos03<U>.Foo<>(1){}; //new Foo<Integer> created

    49         Foo<?> f7 = new Pos03<U>.Foo<>(1){}; //new Foo<Object> created

    50         Foo<? super Integer> f8 = new Pos03<U>.Foo<>(1){}; //new Foo<Object> created

    51 

    52         Foo<Integer> f9 = new Pos03<U>.Foo<>(1, ""); //new Foo<Integer> created

    53         Foo<? extends Integer> f10 = new Pos03<U>.Foo<>(1, ""); //new Foo<Integer> created

    54         Foo<?> f11 = new Pos03<U>.Foo<>(1, ""); //new Foo<Object> created

    55         Foo<? super Integer> f12 = new Pos03<U>.Foo<>(1, ""); //new Foo<Object> created

    56 

    57         Foo<Integer> f13 = new Pos03<U>.Foo<>(1, ""){}; //new Foo<Integer> created

    58         Foo<? extends Integer> f14 = new Pos03<U>.Foo<>(1, ""){}; //new Foo<Integer> created

    59         Foo<?> f15 = new Pos03<U>.Foo<>(1, ""){}; //new Foo<Object> created

    60         Foo<? super Integer> f16 = new Pos03<U>.Foo<>(1, ""){}; //new Foo<Object> created

    61     }

    62 

    63     void testQualified_2(Pos03<U> p) {

    64         Foo<Integer> f1 = p.new Foo<>(1); //new Foo<Integer> created

    65         Foo<? extends Integer> f2 = p.new Foo<>(1); //new Foo<Integer> created

    66         Foo<?> f3 = p.new Foo<>(1); //new Foo<Object> created

    67         Foo<? super Integer> f4 = p.new Foo<>(1); //new Foo<Object> created

    68 

    69         Foo<Integer> f5 = p.new Foo<>(1){}; //new Foo<Integer> created

    70         Foo<? extends Integer> f6 = p.new Foo<>(1){}; //new Foo<Integer> created

    71         Foo<?> f7 = p.new Foo<>(1){}; //new Foo<Object> created

    72         Foo<? super Integer> f8 = p.new Foo<>(1){}; //new Foo<Object> created

    73 

    74         Foo<Integer> f9 = p.new Foo<>(1, ""); //new Foo<Integer> created

    75         Foo<? extends Integer> f10 = p.new Foo<>(1, ""); //new Foo<Integer> created

    76         Foo<?> f11 = p.new Foo<>(1, ""); //new Foo<Object> created

    77         Foo<? super Integer> f12 = p.new Foo<>(1, ""); //new Foo<Object> created

    78 

    79         Foo<Integer> f13 = p.new Foo<>(1, ""){}; //new Foo<Integer> created

    80         Foo<? extends Integer> f14 = p.new Foo<>(1, ""){}; //new Foo<Integer> created

    81         Foo<?> f15 = p.new Foo<>(1, ""){}; //new Foo<Object> created

    82         Foo<? super Integer> f16 = p.new Foo<>(1, ""){}; //new Foo<Object> created

    83     }

    84 

    85     public static void main(String[] args) {

    86         Pos03<String> p3 = new Pos03<>();

    87         p3.testSimple();

    88         p3.testQualified_1();

    89         p3.testQualified_2(p3);

    90     }

    91 }