Java example source code file (Test4.java)

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Java - Java tags/keywords

ad2, util

The Test4.java Java example source code

/**
 * @test     /nodynamiccopyright/
 * @bug      7062745 7157798
 * @summary  Negative test of conflicting same-name methods inherited from multiple interfaces when parameter types not compatible
 * @compile/fail/ref=Test4.out -Werror -Xlint:unchecked -XDrawDiagnostics Test4.java
 */

import java.util.Set;
import java.util.HashSet;

interface A { void m(Set<Integer> s); }
interface B { void m(Set<String> s); }
interface C { void m(Set<?> s); }

interface AB extends A, B {} //error

interface AC extends A, C {} //error

interface D<T> { void m(Set s); }

interface AD extends A, D<Integer> {} //OK

interface AD2 extends A, D<Number> {} //error

interface CD<T> extends C, D {} //error

interface E { <T> void m(Set s); }

interface DE<T> extends D, E {} //error