Java String Uncapitalize uncapitalize(String str)

Description

Uncapitalizes a String (makes the first char lowercase) taking care of blank strings and single character strings.

License

Apache License

Parameter

Parameter	Description
str	The String to be uncapitalized

Return

Uncapitalized version of the target string if it is not blank

Declaration

public static String uncapitalize(String str) 

Method Source Code

//package com.java2s;
/*/* w  w w .  j  a va 2  s  .  c  om*/
 * Copyright 2008-2015 the original author or authors.
 *
 * 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 {
    /**
     * Uncapitalizes a String (makes the first char lowercase) taking care
     * of blank strings and single character strings.
     *
     * @param str The String to be uncapitalized
     * @return Uncapitalized version of the target string if it is not blank
     */
    public static String uncapitalize(String str) {
        if (isBlank(str))
            return str;
        if (str.length() == 1)
            return String.valueOf(Character.toLowerCase(str.charAt(0)));
        return Character.toLowerCase(str.charAt(0)) + str.substring(1);
    }

    /**
     * <p>Determines whether a given string is <code>null</code>, empty,
     * or only contains whitespace. If it contains anything other than
     * whitespace then the string is not considered to be blank and the
     * method returns <code>false</code>.</p>
     * <p>We could use Commons Lang for this, but we don't want GriffonNameUtils
     * to have a dependency on any external library to minimise the number of
     * dependencies required to bootstrap Griffon.</p>
     *
     * @param str The string to test.
     * @return <code>true</code> if the string is <code>null</code>, or
     * blank.
     */
    public static boolean isBlank(String str) {
        if (str == null || str.length() == 0) {
            return true;
        }
        for (char c : str.toCharArray()) {
            if (!Character.isWhitespace(c)) {
                return false;
            }
        }

        return true;
    }
}

Related

1. uncapitalize(String str)
2. unCapitalize(String str)
3. uncapitalize(String str)
4. uncapitalize(String str)
5. uncapitalize(String str)
6. uncapitalize(String str)
7. uncapitalize(String str)
8. uncapitalize(String str)
9. uncapitalize(String str)