Java example source code file (Neg01.java)

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Java - Java tags/keywords

foo, neg01, number, string

The Neg01.java Java example source code

/*
 * @test /nodynamiccopyright/
 * @bug 6939620 7020044
 *
 * @summary  Check that diamond fails when inference violates declared bounds
 *           (basic test with nested class, generic/non-generic constructors)
 * @author mcimadamore
 * @compile/fail/ref=Neg01.out Neg01.java -XDrawDiagnostics
 *
 */

class Neg01<X extends Number> {

    Neg01(X x) {}

    <Z> Neg01(X x, Z z) {}

    void test() {
        Neg01<String> n1 = new Neg01<>("");
        Neg01<? extends String> n2 = new Neg01<>("");
        Neg01<?> n3 = new Neg01<>("");
        Neg01<? super String> n4 = new Neg01<>("");

        Neg01<String> n5 = new Neg01<>("", "");
        Neg01<? extends String> n6 = new Neg01<>("", "");
        Neg01<?> n7 = new Neg01<>("", "");
        Foo<? super String> n8 = new Neg01<>("", "");
    }
}