Java String Capitalize capitalize(String s)

Description

Capitalizes the given string, making its first character upper case, and the rest of them lower case.

License

Open Source License

Parameter

Parameter	Description
s	the string to capitalize

Return

the capitalized string

Declaration

public static String capitalize(String s) 

Method Source Code

//package com.java2s;
/*//from   w  ww. ja v  a 2s. c  o m
 * This file is part of muCommander, http://www.mucommander.com
 * Copyright (C) 2002-2010 Maxence Bernard
 *
 * muCommander is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * muCommander is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    public static final String EMPTY = "";

    /**
     * Capitalizes the given string, making its first character upper case, and the rest of them lower case.
     * This method reeturns an empty string if <code>null</code> or an empty string is passed.
     *
     * @param s the string to capitalize
     * @return the capitalized string
     */
    public static String capitalize(String s) {
        if (isNullOrEmpty(s))
            return EMPTY;

        StringBuilder out = new StringBuilder(s.length());
        out.append(Character.toUpperCase(s.charAt(0)));
        if (s.length() > 1)
            out.append(s.substring(1).toLowerCase());
        return out.toString();
    }

    /**
     * Returns true if the given string is null or empty (i.e. it's length is 0)
     *
     * @param string - the given String to check
     * @return true if the given string is null or empty, false otherwise
     */
    public static boolean isNullOrEmpty(String string) {
        return string == null || string.isEmpty();
    }
}

Related

1. capitalize(String s)
2. capitalize(String s)
3. capitalize(String s)
4. capitalize(String s)
5. capitalize(String s)
6. capitalize(String s)
7. capitalize(String s)
8. capitalize(String s)
9. capitalize(String s)