ParametricException.java revision 288
/*
* Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/*
* @test
* @bug 4509267
* @summary generics: parametric exception type versus overriding
* @author gafter
*
* @compile ParametricException.java
*/
abstract class AChurchBoolean {
}
}
class TrueChurchBoolean extends AChurchBoolean {
private TrueChurchBoolean() {}
public static TrueChurchBoolean singleton() {
return instance;
}
}
}
class FalseChurchBoolean extends AChurchBoolean {
private FalseChurchBoolean() {}
public static FalseChurchBoolean singleton() {
return instance;
}
}
}
class Pair<T,U> {
private T first;
private U second;
}
T getFirst() {
return first;
}
U getSecond() {
return second;
}
}
// Perhaps a bit of a toy example, but relevant nonetheless.
class ChurchBooleanTest {
private AChurchBoolean bool;
}
return TrueChurchBoolean.singleton();
}
return FalseChurchBoolean.singleton();
}
}
}