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      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 {
     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 {
     54     public R4base thisIsTrouble();
     55 }
     56 
     57 interface Interface4a {
     58     public R4a thisIsTrouble();
     59 }
     60 interface Interface4aa {
     61     public R4aa thisIsTrouble();
     62 }
     63 interface Interface4b {
     64     public R4b thisIsTrouble();
     65 }
     66 interface Interface4bb {
     67     public R4bb thisIsTrouble();
     68 }
     69 
     70 class Clash4InvocationHandler implements InvocationHandler {
     71     /* don't really need to do anything -- should never get this far */
     72     public Object invoke(Object proxy, Method method, Object[] args)
     73         throws Throwable {
     74 
     75         return null;
     76     }
     77 }
     78