/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class CovariantReturnTypeTest {
/**
* @param args
*/
public static void main(String[] args) {
final A a = new A();
final B b = new B();
final A ab = new B();
System.out.println("a.foo = " + a.foo());
System.out.println("b.foo = " + b.foo());
System.out.println("ab.foo = " + ab.foo());
final String s = b.foo();
System.out.println("s = " + s);
}
public static class A {
public Object foo() {
return null;
}
}
public static class B extends A {
public String foo() {
return "Hello world";
}
}
}