Java tutorial
/* * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javafx.util.converter; import javafx.util.StringConverter; /** * <p>{@link StringConverter} implementation for {@link Integer} * (and int primitive) values.</p> * @since JavaFX 2.1 */ public class IntegerStringConverter extends StringConverter<Integer> { /** {@inheritDoc} */ @Override public Integer fromString(String value) { // If the specified value is null or zero-length, return null if (value == null) { return null; } value = value.trim(); if (value.length() < 1) { return null; } return Integer.valueOf(value); } /** {@inheritDoc} */ @Override public String toString(Integer value) { // If the specified value is null, return a zero-length String if (value == null) { return ""; } return (Integer.toString(((Integer) value).intValue())); } }