ReorderedBoundsTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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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
 * 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
 * @bug 8166363
 * @summary Method with reordered type parameter bounds compiles with Override annotation but does not actually override superclass method.
 * @run main ReorderedBoundsTest
 */

import java.io.Serializable;

public class ReorderedBoundsTest {
  public static class Parent {
    public <T extends Appendable & Serializable> String printClassName(T t) {
      return "Parent";
    }
  }

  public static class OrderedChild extends Parent {
    @Override
    public <T extends Appendable & Serializable> String printClassName(T t) {
      return "OrderedChild";
    }
  }

  public static class ReorderedChild extends Parent {
    @Override
    public <T extends Serializable & Appendable> String printClassName(T t) {
      return "ReorderedChild";
    }
  }

  public static void main(String[] args) {

    String s;
    Parent p = new OrderedChild();
    if (!(s = p.printClassName(new StringBuilder())).equals("OrderedChild"))
        throw new AssertionError("Bad output: " + s);

    p = new ReorderedChild();
    if (!(s = p.printClassName(new StringBuilder())).equals("ReorderedChild"))
        throw new AssertionError("Bad output: " + s);
  }
}