Fri, 24 Apr 2020 03:58:51 +0100
Merge
1 /*
2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 6943289
27 * @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch')
28 */
30 import java.lang.annotation.*;
32 public class Pos04 {
34 enum ExceptionKind {
35 A(1),
36 B(2),
37 C(1);
39 int expectedValue;
41 ExceptionKind(int expectedValue) {
42 this.expectedValue = expectedValue;
43 }
44 }
46 @Retention(RetentionPolicy.RUNTIME)
47 @interface CatchNumber {
48 int value();
49 }
51 @CatchNumber(1)
52 static class A extends Exception { }
54 @CatchNumber(2)
55 static class B extends Exception { }
57 @CatchNumber(1)
58 static class C extends Exception { }
60 static int sum = 0;
62 public static void main(String[] args) {
63 for (ExceptionKind ekind : ExceptionKind.values()) {
64 test(ekind);
65 }
66 if (sum != 4) {
67 throw new Error("bad checksum - expected:4, found:" + sum);
68 }
69 }
71 public static void test(ExceptionKind ekind) {
72 try {
73 switch(ekind) {
74 case A: throw new A();
75 case B: throw new B();
76 case C: throw new C();
77 }
78 } catch(final A | C ex) {// Catch number 1
79 CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class);
80 if (catchNumber == null || catchNumber.value() != ekind.expectedValue) {
81 throw new Error("was expecting 1 - got " + catchNumber);
82 }
83 sum += catchNumber.value();
84 } catch (final B ex) { // Catch number 2
85 CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class);
86 if (catchNumber == null || catchNumber.value() != ekind.expectedValue) {
87 throw new Error("was expecting 2 - got " + catchNumber);
88 }
89 sum += catchNumber.value();
90 }
91 }
92 }