Java example source code file (TargetType14.java)

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Java - Java tags/keywords

sam, targettype14

The TargetType14.java Java example source code

/*
 * @test /nodynamiccopyright/
 * @bug 8003280
 * @summary Add lambda tests
 *  check that return type is inferred from target type when cyclic inference found
 * @author  Maurizio Cimadamore
 * @compile/fail/ref=TargetType14.out -XDrawDiagnostics TargetType14.java
 */

class TargetType14 {

    interface SAM<X> {
        X m(int i, int j);
    }

    static void test() {
        SAM<Integer> s1 = (i, j) -> i + j;
        m((i, j) -> i + j);
        SAM<Integer> s2 = m2((i, j) -> i + j); //ok
        SAM<Integer> s3 = m2((i, j) -> "" + i + j); //no
    }

    static void m(SAM<Integer> s) { }
    static <X> SAM m2(SAM s) { return null; }
}