package org.sep4j.support; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; import org.apache.commons.lang.StringUtils; /** * * @author [email protected] * */ public class SepStringHelper { /** * firstName => First Name * @param camelStr * @return */ public static String camelCaseToCapitalizedWords(String camelStr) { if (StringUtils.isBlank(camelStr)) { return camelStr; } String[] wordArray = StringUtils.splitByCharacterTypeCamelCase(camelStr); if (wordArray == null || wordArray.length == 0) { return null; } List<String> capitalizedList = Arrays.stream(wordArray).map(w -> StringUtils.capitalize(w)) .collect(Collectors.toList()); return StringUtils.join(capitalizedList, " "); } /** * First Name => firstName * @param words * @return */ public static String wordsToUncapitalizedCamelCase(String words) { if (StringUtils.isBlank(words)) { return words; } String[] wordArray = StringUtils.split(words); List<String> capitalizedList = Arrays.stream(wordArray).map(w -> StringUtils.capitalize(w)) .collect(Collectors.toList()); String camel = StringUtils.join(capitalizedList, ""); return StringUtils.uncapitalize(camel); } }