Wed, 12 Feb 2014 11:16:22 -0800
Added tag jdk8u11-b00 for changeset c9db8c800797
duke@1 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. |
duke@1 | 8 | * |
duke@1 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 13 | * accompanied this code). |
duke@1 | 14 | * |
duke@1 | 15 | * You should have received a copy of the GNU General Public License version |
duke@1 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 18 | * |
ohair@554 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 20 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 21 | * questions. |
duke@1 | 22 | */ |
duke@1 | 23 | |
duke@1 | 24 | /* |
duke@1 | 25 | * @test |
duke@1 | 26 | * @bug 4855355 |
duke@1 | 27 | * @summary implement "foreach" loops as specified in JSR 201 |
duke@1 | 28 | * @author gafter |
duke@1 | 29 | */ |
duke@1 | 30 | |
duke@1 | 31 | import java.util.Iterator; |
duke@1 | 32 | |
duke@1 | 33 | public class Foreach implements Iterable<Integer> { |
duke@1 | 34 | |
duke@1 | 35 | public Iterator<Integer> iterator() { |
duke@1 | 36 | return new Iterator<Integer>() { |
duke@1 | 37 | int next = 1; |
duke@1 | 38 | public boolean hasNext() { |
duke@1 | 39 | return next <= (1 << 12); |
duke@1 | 40 | } |
duke@1 | 41 | public void remove() { |
duke@1 | 42 | throw new UnsupportedOperationException(); |
duke@1 | 43 | } |
duke@1 | 44 | public Integer next() { |
duke@1 | 45 | try { |
duke@1 | 46 | return new Integer(next); |
duke@1 | 47 | } finally { |
duke@1 | 48 | next <<= 1; |
duke@1 | 49 | } |
duke@1 | 50 | } |
duke@1 | 51 | }; |
duke@1 | 52 | } |
duke@1 | 53 | |
duke@1 | 54 | public static void main(String[] args) { |
duke@1 | 55 | int sum; |
duke@1 | 56 | |
duke@1 | 57 | sum = 0; |
duke@1 | 58 | int[] a = new int[12]; |
duke@1 | 59 | for (int i=0; i<12; i++) a[i] = 1<<i; |
duke@1 | 60 | for (int i : a) { |
duke@1 | 61 | if (i > 400) break; |
duke@1 | 62 | if (i == 16) continue; |
duke@1 | 63 | sum += i; |
duke@1 | 64 | } |
duke@1 | 65 | if (sum != 495) |
duke@1 | 66 | throw new AssertionError("cogito ergo " + sum); |
duke@1 | 67 | |
duke@1 | 68 | sum = 0; |
duke@1 | 69 | Iterable<Integer> x = new Foreach(); |
duke@1 | 70 | for (Integer j : x) |
duke@1 | 71 | sum += j.intValue(); |
duke@1 | 72 | if (sum != 8191) |
duke@1 | 73 | throw new AssertionError("cogito ergo " + sum); |
duke@1 | 74 | |
duke@1 | 75 | System.out.println("success!"); |
duke@1 | 76 | } |
duke@1 | 77 | } |