KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > gov > nasa > jpf > jvm > TestCast


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf.jvm;
20
21 /**
22  * test cast operations
23  */
24 public class TestCast {
25   public static void main (String JavaDoc[] args) {
26     TestCast t = new TestCast();
27
28     if (args.length > 0) {
29       // just run the specified tests
30 for (int i = 0; i < args.length; i++) {
31         String JavaDoc func = args[i];
32
33         // note that we don't use reflection here because this would
34 // blow up execution/test scope under JPF
35 if ("testCast".equals(func)) {
36           t.testCast();
37         } else if ("testCastFail".equals(func)) {
38           t.testCastFail();
39         } else {
40           throw new IllegalArgumentException JavaDoc("unknown test function");
41         }
42       }
43     } else {
44       // that's mainly for our standalone test verification
45 t.testCast();
46       t.testCastFail();
47     }
48   }
49
50   public void testCast () {
51     B b = new B();
52     A a = b;
53
54     I i = (I) a;
55     K k = (K) b;
56   }
57
58   public void testCastFail () {
59     A a = new A();
60
61     try {
62       I i = (I) a;
63     } catch (ClassCastException JavaDoc ccx) {
64       return;
65     }
66
67     throw new RuntimeException JavaDoc("illegal cast passed");
68   }
69
70   static interface I {
71   }
72
73   static interface J extends I {
74   }
75
76   static interface K {
77   }
78
79   static class A implements K {
80   }
81
82   static class B extends A implements J {
83   }
84 }
Popular Tags