    /*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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 jsp2.examples.el;

    import java.util.Locale;

    /**
     * Defines the functions for the jsp2 example tag library.
     *
     * <p>Each function is defined as a static method.</p>
     */
    public class Functions {
        public static String reverse( String text ) {
            return new StringBuilder( text ).reverse().toString();
        }

        public static int numVowels( String text ) {
            String vowels = "aeiouAEIOU";
            int result = 0;
            for( int i = 0; i < text.length(); i++ ) {
                if( vowels.indexOf( text.charAt( i ) ) != -1 ) {
                    result++;
                }
            }
            return result;
        }

        public static String caps( String text ) {
            return text.toUpperCase(Locale.ENGLISH);
        }
    }