test/tools/javac/lambda/TargetType14.java

Wed, 27 Apr 2016 01:34:52 +0800

author
aoqi
date
Wed, 27 Apr 2016 01:34:52 +0800
changeset 0
959103a6100f
permissions
-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0 1 /*
aoqi@0 2 * @test /nodynamiccopyright/
aoqi@0 3 * @bug 8003280
aoqi@0 4 * @summary Add lambda tests
aoqi@0 5 * check that return type is inferred from target type when cyclic inference found
aoqi@0 6 * @author Maurizio Cimadamore
aoqi@0 7 * @compile/fail/ref=TargetType14.out -XDrawDiagnostics TargetType14.java
aoqi@0 8 */
aoqi@0 9
aoqi@0 10 class TargetType14 {
aoqi@0 11
aoqi@0 12 interface SAM<X> {
aoqi@0 13 X m(int i, int j);
aoqi@0 14 }
aoqi@0 15
aoqi@0 16 static void test() {
aoqi@0 17 SAM<Integer> s1 = (i, j) -> i + j;
aoqi@0 18 m((i, j) -> i + j);
aoqi@0 19 SAM<Integer> s2 = m2((i, j) -> i + j); //ok
aoqi@0 20 SAM<Integer> s3 = m2((i, j) -> "" + i + j); //no
aoqi@0 21 }
aoqi@0 22
aoqi@0 23 static void m(SAM<Integer> s) { }
aoqi@0 24 static <X> SAM<X> m2(SAM<X> s) { return null; }
aoqi@0 25 }

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