/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.core.convert.support;
import org.springframework.core.convert.converter.Converter;
/**
* Converts a String to a Character.
*
* @author Keith Donald
* @since 3.0
*/
final class StringToCharacterConverter implements Converter<String, Character> {
@Override
public Character convert(String source) {
if (source.isEmpty()) {
return null;
}
if (source.length() > 1) {
throw new IllegalArgumentException(
"Can only convert a [String] with length of 1 to a [Character]; string value '" + source + "' has length of " + source.length());
}
return source.charAt(0);
}
}