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

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/tools/javac/generics/wildcards/neg/AmbiguousCast.java	Wed Apr 27 01:34:52 2016 +0800
     1.3 @@ -0,0 +1,55 @@
     1.4 +/*
     1.5 + * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 + * @test
    1.29 + * @bug 4897892
    1.30 + * @summary cast to parameterized type is accepted although it should be rejected
    1.31 + * @author gafter
    1.32 + *
    1.33 + * @compile/fail  -Werror -Xlint:unchecked AmbiguousCast.java
    1.34 + */
    1.35 +
    1.36 +class Test {
    1.37 +
    1.38 +    private static class GenericWrapper<Elem> {
    1.39 +        private Elem theObject;
    1.40 +        public GenericWrapper(Elem arg) {
    1.41 +            theObject = arg;
    1.42 +        }
    1.43 +        public <T extends Elem> GenericWrapper (GenericWrapper<T> other) {
    1.44 +            this.theObject = other.theObject;
    1.45 +        }
    1.46 +        public String toString() {
    1.47 +            return theObject.toString();
    1.48 +        }
    1.49 +    }
    1.50 +    private static GenericWrapper<String> method (Object wrappedString) {
    1.51 +        return (GenericWrapper<String>) wrappedString;
    1.52 +    }
    1.53 +
    1.54 +    public static void main(String[] args) {
    1.55 +        System.out.println(method(new GenericWrapper<String>("abc")));
    1.56 +        System.out.println(method(new GenericWrapper<Exception>(new Exception())));
    1.57 +    }
    1.58 +}