test/tools/javac/ConstantValues/ConstValInit.java

Wed, 14 Nov 2018 10:18:25 -0800

author
diazhou
date
Wed, 14 Nov 2018 10:18:25 -0800
changeset 3762
7909abb85562
parent 554
9d9f26857129
child 2525
2eb010b6cb22
permissions
-rw-r--r--

Added tag jdk8u201-b04 for changeset a7f48b9dfb82

duke@1 1 /*
ohair@554 2 * Copyright (c) 1999, 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 4253590
duke@1 27 * @summary Verify that non-static constant fields are initialized correctly.
duke@1 28 * Also, while a runtime initialization is required, verify that
duke@1 29 * references to such fields via a simple variable are correctly
duke@1 30 * recognized as constant expressions.
duke@1 31 * @author maddox (adapted from bug report)
duke@1 32 *
duke@1 33 * @run compile ConstValInit.java
duke@1 34 * @run main ConstValInit
duke@1 35 */
duke@1 36
duke@1 37 public class ConstValInit {
duke@1 38
duke@1 39 public final String fnl_str = "Test string";
duke@1 40
duke@1 41 public final int fnl_int = 1;
duke@1 42
duke@1 43 public static void main(String args[]) throws Exception {
duke@1 44
duke@1 45 Class checksClass = Class.forName("ConstValInit");
duke@1 46 ConstValInit checksObject = (ConstValInit)(checksClass.newInstance());
duke@1 47 String reflected_fnl_str = (String)checksClass.getField("fnl_str").get(checksObject);
duke@1 48 if (!checksObject.fnl_str.equals(reflected_fnl_str)) {
duke@1 49 throw new Exception("FAILED: ordinary and reflected field values differ");
duke@1 50 }
duke@1 51
duke@1 52 }
duke@1 53
duke@1 54 void foo() {
duke@1 55 // Statement below will not compile if fnl_int is not recognized
duke@1 56 // as a constant expression.
duke@1 57 switch (1) {
duke@1 58 case fnl_int: break;
duke@1 59 }
duke@1 60 }
duke@1 61
duke@1 62 }

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