Java tutorial
/* * Copyright 2011 Arie Benichou * * This program is free software: you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, either version 3 of the License, or (at your option) any later * version. * * This program 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 for more * details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ package concretisations.tictactoe.pieces; import java.util.Set; import abstractions.cell.ManagedCellInterface; import abstractions.mutation.AtomicMutationFactory; import abstractions.mutation.MutationInterface; import abstractions.piece.AbstractPiece; import abstractions.piece.PieceTypeInterface; import abstractions.side.SideInterface; import com.google.common.collect.ImmutableSet; public final class Null extends AbstractPiece { public Null(final SideInterface side, final PieceTypeInterface type) { super(side, type); } @Override public Set<? extends MutationInterface> computePotentialMutations(final ManagedCellInterface cell, final SideInterface side) { return ImmutableSet.of(AtomicMutationFactory.newBirth(cell, side, TicTacToePieceSet.PAWN)); } @Override public String toString() { return " "; // space } }