Quelle ExportTwice.java Sprache: JAVA

/*
* Copyright (c) 2016, 2022, 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.
*/

/*
* @test
* @modules java.base/jdk.internal.misc
* @library /test/lib ..
* @compile p2/c2.java
* @compile p1/c1.java
* @build jdk.test.whitebox.WhiteBox
* @compile/module=java.base java/lang/ModuleHelper.java
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ExportTwice
*/

import static jdk.test.lib.Asserts.*;

public class ExportTwice {

    // Check that a package can not be exported unqualifiedly, and then exported
    // to a specific package.
    // Also, check that a package can be exported to a specific package and then
    // exported unqualifiedly.
    public static void main(String args[]) throws Throwable {
        Object m1x, m2x, m3x;

        // Get the java.lang.Module object for module java.base.
        Class jlObject = Class.forName("java.lang.Object");
        Object jlObject_jlM = jlObject.getModule();
        assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");

        // Get the class loader for ExportTwice and assume it's also used to
        // load classes p1.c1 and p2.c2.
        ClassLoader this_cldr = ExportTwice.class.getClassLoader();

        // Define a module for p1.
        m1x = ModuleHelper.ModuleObject("module_one", this_cldr, new String[] { "p1" });
        assertNotNull(m1x, "Module should not be null");
        ModuleHelper.DefineModule(m1x, false, "9.0", "m1x/here", new String[] { "p1" });
        ModuleHelper.AddReadsModule(m1x, jlObject_jlM);

        // Define a module for p2.
        m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
        assertNotNull(m2x, "Module should not be null");
        ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" });
        ModuleHelper.AddReadsModule(m2x, jlObject_jlM);

        // Define a module for p3.
        m3x = ModuleHelper.ModuleObject("module_three", this_cldr, new String[] { "p3" });
        assertNotNull(m3x, "Module should not be null");
        ModuleHelper.DefineModule(m3x, false, "9.0", "m3x/there", new String[] { "p3" });
        ModuleHelper.AddReadsModule(m3x, jlObject_jlM);

        // Make package p1 in m1x visible to everyone.
        ModuleHelper.AddModuleExportsToAll(m1x, "p1");

        // Try to export p1 only to m2x after it was exported unqualifiedly.  It
        // should silently succeed.
        ModuleHelper.AddModuleExports(m1x, "p1", m2x);

        // Export p2 to m3x then export it again unqualifiedly.
        ModuleHelper.AddModuleExports(m2x, "p2", m3x);
        ModuleHelper.AddModuleExportsToAll(m2x, "p2");

        // p1.c1's ctor tries to call a method in p2.c2.  This should work because
        // p1's module can read p2's module and p2 is now exported unqualifiedly.
        ModuleHelper.AddReadsModule(m1x, m2x);
        Class p1_c1_class = Class.forName("p1.c1");
        p1_c1_class.newInstance();
    }
}

quality91%

¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.