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 */ 23 24/* 25 * @test 26 * @bug 6943289 27 * @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch') 28 */ 29 30import java.lang.annotation.*; 31 32public class Pos04 { 33 34 enum ExceptionKind { 35 A(1), 36 B(2), 37 C(1); 38 39 int expectedValue; 40 41 ExceptionKind(int expectedValue) { 42 this.expectedValue = expectedValue; 43 } 44 } 45 46 @Retention(RetentionPolicy.RUNTIME) 47 @interface CatchNumber { 48 int value(); 49 } 50 51 @CatchNumber(1) 52 static class A extends Exception { } 53 54 @CatchNumber(2) 55 static class B extends Exception { } 56 57 @CatchNumber(1) 58 static class C extends Exception { } 59 60 static int sum = 0; 61 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 } 70 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} 93