blob: adeffdcf110f8c74fd5723e308b1320a131b677e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/*
* Try to instantiate a proxy class with interfaces that have conflicting
* duplicate methods (primitive vs. object).
*/
public class Clash {
public static void main(String[] args) {
InvocationHandler handler = new ClashInvocationHandler();
/* try passing in the same interface twice */
try {
Proxy.newProxyInstance(Clash.class.getClassLoader(),
new Class[] { Interface1A.class, Interface1A.class },
handler);
System.err.println("Dupe did not throw expected exception");
} catch (IllegalArgumentException iae) {
System.out.println("Dupe threw expected exception");
}
try {
Proxy.newProxyInstance(Clash.class.getClassLoader(),
new Class[] { Interface1A.class, Interface1B.class },
handler);
System.err.println("Clash did not throw expected exception");
} catch (IllegalArgumentException iae) {
System.out.println("Clash threw expected exception");
}
}
}
interface Interface1A {
public int thisIsOkay();
public float thisIsTrouble();
}
interface Interface1B {
public int thisIsOkay();
public Object thisIsTrouble();
}
class ClashInvocationHandler implements InvocationHandler {
/* don't really need to do anything -- should never get this far */
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
return null;
}
}
|
