1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 import java.lang.reflect.InvocationHandler;
18 import java.lang.reflect.InvocationTargetException;
19 import java.lang.reflect.Method;
20 import java.lang.reflect.Proxy;
21 
22 /*
23  * Try to instantiate a proxy class with interfaces that have conflicting
24  * duplicate methods (tree of types).
25  */
26 public class Clash4 {
main(String[] args)27     public static void main(String[] args) {
28         InvocationHandler handler = new Clash4InvocationHandler();
29 
30         try {
31             Proxy.newProxyInstance(Clash.class.getClassLoader(),
32                 new Class<?>[] {
33                     Interface4a.class,
34                     Interface4aa.class,
35                     Interface4base.class,
36                     Interface4b.class,
37                     Interface4bb.class },
38                 handler);
39             System.out.println("Clash4 did not throw expected exception");
40         } catch (IllegalArgumentException iae) {
41             System.out.println("Clash4 threw expected exception");
42             //System.out.println(iae);
43         }
44     }
45 }
46 
47 class R4base { int mBlah;  }
48 class R4a extends R4base { int mBlah_a;  }
49 class R4aa extends R4a { int mBlah_aa;  }
50 class R4b extends R4base { int mBlah_b;  }
51 class R4bb extends R4b { int mBlah_bb;  }
52 
53 interface Interface4base {
thisIsTrouble()54     public R4base thisIsTrouble();
55 }
56 
57 interface Interface4a {
thisIsTrouble()58     public R4a thisIsTrouble();
59 }
60 interface Interface4aa {
thisIsTrouble()61     public R4aa thisIsTrouble();
62 }
63 interface Interface4b {
thisIsTrouble()64     public R4b thisIsTrouble();
65 }
66 interface Interface4bb {
thisIsTrouble()67     public R4bb thisIsTrouble();
68 }
69 
70 class Clash4InvocationHandler implements InvocationHandler {
71     /* don't really need to do anything -- should never get this far */
invoke(Object proxy, Method method, Object[] args)72     public Object invoke(Object proxy, Method method, Object[] args)
73         throws Throwable {
74 
75         return null;
76     }
77 }
78