test/jdk/java/lang/Class/getDeclaredField/ClassDeclaredFieldsTest.java - master - githubmirror/galahad

test/jdk/java/lang/Class/getDeclaredField/ClassDeclaredFieldsTest.java

60 строк2 KB

Sean Mullan

8338411: Implement JEP 486: Permanently Disable the Security Manager

12 ноя 2024, 20:16

12 ноя 2024, 20:16db85090

/*
 * Copyright (c) 2014, 2024, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.lang.reflect.Field;

/**
 * @test
 * @bug 8065552
 * @summary test that all fields returned by getDeclaredFields() can be
 *          set accessible if package java.lang is open to unnamed module;
 *          this test also verifies that Class.classLoader final private field
 *          is hidden from reflection access.
 * @modules java.base/java.lang:open
 * @run main/othervm ClassDeclaredFieldsTest
 *
 * @author danielfuchs
 */
public class ClassDeclaredFieldsTest {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        System.out.println(System.getProperty("java.version"));
        for (Field f : Class.class.getDeclaredFields()) {
            f.setAccessible(true);
            System.out.println("Field "+f.getName()+" is now accessible.");
            if (f.getName().equals("classLoader")) {
                throw new RuntimeException("Found "+f.getName()+" field!");
            }
        }
        try {
            Class.class.getDeclaredField("classLoader");
            throw new RuntimeException("Expected NoSuchFieldException for"
                    + " 'classLoader' field not raised");
        } catch(NoSuchFieldException x) {
            System.out.println("Got expected exception: " + x);
        }
        System.out.println("Passed");
    }
}