001/*
002 * Copyright 2002-2015 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.format.number;
018
019import java.text.DecimalFormat;
020import java.text.NumberFormat;
021import java.util.Locale;
022
023/**
024 * A formatter for number values in percent style.
025 *
026 * <p>Delegates to {@link java.text.NumberFormat#getPercentInstance(Locale)}.
027 * Configures BigDecimal parsing so there is no loss in precision.
028 * The {@link #parse(String, Locale)} routine always returns a BigDecimal.
029 *
030 * @author Keith Donald
031 * @author Juergen Hoeller
032 * @since 4.2
033 * @see #setLenient
034 */
035public class PercentStyleFormatter extends AbstractNumberFormatter {
036
037        @Override
038        protected NumberFormat getNumberFormat(Locale locale) {
039                NumberFormat format = NumberFormat.getPercentInstance(locale);
040                if (format instanceof DecimalFormat) {
041                        ((DecimalFormat) format).setParseBigDecimal(true);
042                }
043                return format;
044        }
045
046}