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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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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
 * @bug 8262891 8269354
 * @summary Test parenthesized pattern
 * @compile --enable-preview -source ${jdk.version} Parenthesized.java
 * @run main/othervm --enable-preview Parenthesized
 */
public class Parenthesized {
    public static void main(String... args) {
        new Parenthesized().run();
    }

    void run() {
        Object o = "";
        switch (o) {
            case (String s && s.isEmpty()) -> System.err.println("OK: " + s);
            default -> throw new AssertionError();
        }
        System.err.println(switch (o) {
            case (String s && s.isEmpty()) -> "OK: " + s;
            default -> throw new AssertionError();
        });
        if (o instanceof (String s && s.isEmpty())) {
            System.err.println("OK: " + s);
        }
        boolean b1 = o instanceof (String s && s.isEmpty());
        boolean b2 = o instanceof String s && s.isEmpty();
    }

}