jdk8-mips64-public/langtools: test/tools/javac/lambda/methodReference/MethodRef7.java@7873d37f5b37

8005244: Implement overload resolution as per latest spec EDR
Summary: Add support for stuck expressions and provisional applicability
Reviewed-by: jjg

     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  */

    24 /**

    25  * @test

    26  * @bug 8003280

    27  * @summary Add lambda tests

    28  *   Test that parameter types are inferred from SAM descriptor when method parameters are elided,

    29              with different types of method references

    30  * @compile MethodRef7.java

    31  * @run main MethodRef7

    32  */

    34 public class MethodRef7 {

    36     static interface A {void m();}

    38     static interface A2 {void m(int n);}

    40     static interface B {String m();}

    42     static interface B2 {String m(int n);}

    44     static interface C {String m(MethodRef7 mr);}

    46     static interface C2 {String m(MethodRef7 mr, int n);}

    48     static interface D {Fee<String> m();}

    50     static interface D2 {Fee<String> m(String s);}

    52     static class Fee<T> {

    54         public Fee() {

    55             System.out.println("Fee<T> instantiated");

    56         }

    58         public Fee(String s) {

    59             System.out.println("Fee<T> instantiated: " + s);

    60         }

    61     }

    63     private static void assertTrue(boolean cond) {

    64         if (!cond)

    65             throw new AssertionError();

    66     }

    68     static void bar() {

    69         System.out.println("MethodRef_neg1.bar()");

    70     }

    72     static void bar(int x) {

    73         System.out.println("MethodRef_neg1.bar(int) " + x);

    74     }

    76     String wahoo() {

    77         return "wahoo";

    78     }

    80     String wahoo(int x) {

    81         return "wahoo " + x;

    82     }

    84     public static void main(String[] args) {

    86         A a = MethodRef7::bar; //static reference to bar()

    87         a.m();

    88         A2 a2 = MethodRef7::bar; //static reference to bar(int x)

    89         a2.m(10);

    91         MethodRef7 mr = new MethodRef7();

    92         B b = mr::wahoo; //instance reference to wahoo()

    93         assertTrue(b.m().equals("wahoo"));

    94         B2 b2 = mr::wahoo; //instance reference to wahoo(int x)

    95         assertTrue(b2.m(1).equals("wahoo 1"));

    97         C c = MethodRef7::wahoo; //unbound reference to wahoo()

    98         assertTrue(c.m(mr).equals("wahoo"));

    99         C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x)

   100         assertTrue(c2.m(mr, 2).equals("wahoo 2"));

   102         D d = Fee<String>::new; //constructor reference to Fee()

   103         D2 d2 = Fee<String>::new; //constructor reference to Fee(String s)

   104     }

   105 }

Mercurial > jdk8-mips64-public > langtools / file revision

test/tools/javac/lambda/methodReference/MethodRef7.java@7873d37f5b37

test/tools/javac/lambda/methodReference/MethodRef7.java