test/langtools/tools/javac/generics/diamond/pos/Pos02.java

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/*
 * @test
 * @bug 6939620 7020044 8062373
 *
 * @summary  basic test for diamond (simple/qualified type-expressions)
 * @author mcimadamore
 * @compile Pos02.java
 * @run main Pos02
 */

public class Pos02 {

    static class Foo<X> {
        Foo(X x) {}
        <Z> Foo(X x, Z z) {}
    }

    void testSimple() {
        Foo<Integer> f1 = new Foo<>(1);
        Foo<? extends Integer> f2 = new Foo<>(1);
        Foo<?> f3 = new Foo<>(1);
        Foo<? super Integer> f4 = new Foo<>(1);

        Foo<Integer> f5 = new Foo<>(1, "");
        Foo<? extends Integer> f6 = new Foo<>(1, "");
        Foo<?> f7 = new Foo<>(1, "");
        Foo<? super Integer> f8 = new Foo<>(1, "");

        Foo<Integer> f9 = new Foo<>(1){};
        Foo<? extends Integer> f10 = new Foo<>(1){};
        Foo<?> f11 = new Foo<>(1){};
        Foo<? super Integer> f12 = new Foo<>(1){};

        Foo<Integer> f13 = new Foo<>(1, ""){};
        Foo<? extends Integer> f14 = new Foo<>(1, ""){};
        Foo<?> f15 = new Foo<>(1, ""){};
        Foo<? super Integer> f16 = new Foo<>(1, ""){};
    }

    void testQualified() {
        Foo<Integer> f1 = new Pos02.Foo<>(1);
        Foo<? extends Integer> f2 = new Pos02.Foo<>(1);
        Foo<?> f3 = new Pos02.Foo<>(1);
        Foo<? super Integer> f4 = new Pos02.Foo<>(1);

        Foo<Integer> f5 = new Pos02.Foo<>(1, "");
        Foo<? extends Integer> f6 = new Pos02.Foo<>(1, "");
        Foo<?> f7 = new Pos02.Foo<>(1, "");
        Foo<? super Integer> f8 = new Pos02.Foo<>(1, "");

        Foo<Integer> f9 = new Pos02.Foo<>(1){};
        Foo<? extends Integer> f10 = new Pos02.Foo<>(1){};
        Foo<?> f11 = new Pos02.Foo<>(1){};
        Foo<? super Integer> f12 = new Pos02.Foo<>(1){};

        Foo<Integer> f13 = new Pos02.Foo<>(1, ""){};
        Foo<? extends Integer> f14 = new Pos02.Foo<>(1, ""){};
        Foo<?> f15 = new Pos02.Foo<>(1, ""){};
        Foo<? super Integer> f16 = new Pos02.Foo<>(1, ""){};
    }

    public static void main(String[] args) {
        Pos02 p2 = new Pos02();
        p2.testSimple();
        p2.testQualified();
    }
}