DoPrivileged.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @summary Test that AccessController.doPrivileged() searches default methods when looking
 *          for the run() method.
 * @bug 8183962
 * @run main DoPrivileged
 */

import java.security.AccessController;
import java.security.PrivilegedAction;

public class DoPrivileged {
    interface VoidPrivilegedAction extends PrivilegedAction<Void> {
        void perform();

        @Override
        default Void run() {
            perform();
            return null;
        }
    }

    static void doPrivileged(VoidPrivilegedAction act) {
        AccessController.doPrivileged(act);
    }

    public static void main(String[] args) throws Exception {
        doPrivileged(() -> System.out.println(System.getProperty("java.home")));
    }
}