Java String Capitalize Word capitalizeFirstLetter(final String word)

Description

Capitalizes the first letter of the passed in string.

License

Apache License

Parameter

Parameter	Description
word	a parameter

Declaration

public static String capitalizeFirstLetter(final String word) 

Method Source Code

//package com.java2s;
/*/*  w w  w.j  av  a  2 s.  c om*/
 * Copyright 2011-2015 B2i Healthcare Pte Ltd, http://b2i.sg
 * 
 * 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.
 */

public class Main {
    /**
     * Capitalizes the first letter of the passed in string. If the passed word
     * is an empty word or contains only whitespace characters, then this passed
     * word is returned. If the first letter is already capitalized returns the
     * passed word. Otherwise capitalizes the first letter of the this word.
     * 
     * @param word
     * @return
     */
    public static String capitalizeFirstLetter(final String word) {
        if (isEmpty(word))
            return word;
        if (Character.isUpperCase(word.charAt(0)))
            return word;
        if (word.length() == 1)
            return word.toUpperCase();
        return Character.toUpperCase(word.charAt(0)) + word.substring(1);
    }

    public static boolean isEmpty(final String string) {
        if (string == null || string.length() == 0) {
            return true;
        }

        for (int i = 0; i < string.length(); i++) {
            if (!Character.isWhitespace(string.charAt(i))) {
                return false;
            }
        }

        return true;
    }
}

Related

1. capitalizedWord(String s)
2. capitalizedWords(String s)
3. CapitalizeEachWord(String Str)
4. capitalizeEachWord(String string)
5. capitalizeFirstCharWords(String sentence)
6. capitalizeFirstLetter(String word)
7. capitalizeFirstLetterEachWord(String sentence)
8. capitalizeFirstLetterWord(String word)
9. capitalizeFirsts(String word)