langtools/test/tools/javac/lambda/MethodReference24.java

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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8003280
 * @summary Add lambda tests
 *  check that non-boxing method references conversion has the precedence
 * @run main MethodReference24
 */

public class MethodReference24 {

    static void assertTrue(boolean cond) {
        assertionCount++;
        if (!cond)
            throw new AssertionError();
    }

    static int assertionCount = 0;

    static void m(int i) { assertTrue(true); }
    static void m(Integer i) { assertTrue(false); }

    interface SAM {
        void m(int x);
    }

    static void call(SAM s) { s.m(42); }

    public static void main(String[] args) {
        SAM s = MethodReference24::m; //resolves to m(int)
        s.m(42);
        call(MethodReference24::m); //resolves to m(int)
        assertTrue(assertionCount == 2);
    }
}