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Java example source code file (MethodReference68.java)

This example Java source code file (MethodReference68.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

foo, integer, methodreference68, string, suppresswarnings

The MethodReference68.java Java example source code

/*
 * @test /nodynamiccopyright/
 * @bug 8016175
 * @summary Add bottom-up type-checking support for unambiguous method references
 * @compile/fail/ref=MethodReference68.out -XDrawDiagnostics MethodReference68.java
 */
class MethodReference68 {
    interface F<X> {
       String m(X x);
    }

    static class Foo {
        String getName() { return ""; }
    }

    @SuppressWarnings("unchecked")
    <Z> void g(F fz, Z... zs) { }

    void test() {
         g(Foo::getName);
         g(Foo::getName, 1); //incompatible constraints, Z <: Foo, Z :> Integer
    }
}

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