/* * Copyright 2010 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. */ /* * @test * @bug 6943289 * @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch') */ import java.lang.annotation.*; public class Pos04 { enum ExceptionKind { A(1), B(2), C(1); int expectedValue; ExceptionKind(int expectedValue) { this.expectedValue = expectedValue; } } @Retention(RetentionPolicy.RUNTIME) @interface CatchNumber { int value(); } @CatchNumber(1) static class A extends Exception { } @CatchNumber(2) static class B extends Exception { } @CatchNumber(1) static class C extends Exception { } static int sum = 0; public static void main(String[] args) { for (ExceptionKind ekind : ExceptionKind.values()) { test(ekind); } if (sum != 4) { throw new Error("bad checksum - expected:4, found:" + sum); } } public static void test(ExceptionKind ekind) { try { switch(ekind) { case A: throw new A(); case B: throw new B(); case C: throw new C(); } } catch(final A | C ex) {// Catch number 1 CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class); if (catchNumber == null || catchNumber.value() != ekind.expectedValue) { throw new Error("was expecting 1 - got " + catchNumber); } sum += catchNumber.value(); } catch (final B ex) { // Catch number 2 CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class); if (catchNumber == null || catchNumber.value() != ekind.expectedValue) { throw new Error("was expecting 2 - got " + catchNumber); } sum += catchNumber.value(); } } }