1 /* 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.util.*; 25 26 /** 27 * @test 28 * @bug 8003280 29 * @summary Add lambda tests 30 * Parameter types inferred from target type in generics with wildcard 31 * @compile InferenceTest2b.java 32 * @run main InferenceTest2b 33 */ 34 35 public class InferenceTest2b { 36 37 private static void assertTrue(boolean cond) { 38 if (!cond) 39 throw new AssertionError(); 40 } 41 42 public static void main(String[] args) { 43 44 InferenceTest2b test = new InferenceTest2b(); 45 46 test.m1((a, b) -> {return a;}); 47 test.m2((a, b) -> {return a;}); 48 test.m3((a, b) -> a); 49 } 50 51 interface SAM6<T> { 52 T m6(T a, T b); 53 } 54 55 void m1(SAM6<? super List<?>> s) { 56 System.out.println("m1()"); 57 Stack<String> a = new Stack<String>(); 58 ArrayList<String> b = new ArrayList<String>(); 59 assertTrue(s.m6(a, b) == a); 60 61 Vector<?> c = null; 62 assertTrue(s.m6(c, b) == c); 63 } 64 65 void m2(SAM6<? super Integer> s) { 66 System.out.println("m2()"); 67 assertTrue(s.m6(1, 2) == 1); 68 } 69 70 void m3(SAM6<? super Calendar> s) { 71 System.out.println("m3()"); 72 Calendar gc = Calendar.getInstance(); 73 GregorianCalendar gc2 = new GregorianCalendar(); 74 assertTrue(s.m6(gc, gc2) == gc); 75 } 76 }