### Question:
Inflector { public String capitalize(String words) { if (words == null) return null; String result = words.trim(); if (result.length() == 0) return ""; if (result.length() == 1) return result.toUpperCase(); return "" + Character.toUpperCase(result.charAt(0)) + result.substring(1).toLowerCase(); } Inflector(); protected  Inflector(Inflector original); @Override Inflector clone(); String pluralize(Object word); String pluralize(Object word,
            int count); String singularize(Object word); String lowerCamelCase(String lowerCaseAndUnderscoredWord,
            char... delimiterChars); String upperCamelCase(String lowerCaseAndUnderscoredWord,
            char... delimiterChars); String camelCase(String lowerCaseAndUnderscoredWord,
            boolean uppercaseFirstLetter,
            char... delimiterChars); String underscore(String camelCaseWord,
            char... delimiterChars); String capitalize(String words); String humanize(String lowerCaseAndUnderscoredWords,
            String... removableTokens); String titleCase(String words,
            String... removableTokens); String ordinalize(int number); boolean isUncountable(String word); Set<String> getUncountables(); void addPluralize(String rule,
            String replacement); void addSingularize(String rule,
            String replacement); void addIrregular(String singular,
            String plural); void addUncountable(String... words); void clear();  }### Answer:
@Test public void shouldCapitalize() { capitalize("active record", "Active record"); capitalize("first name", "First name"); capitalize("name", "Name"); capitalize("the first name", "The first name"); capitalize("employee_salary", "Employee_salary"); capitalize("underground", "Underground"); }