Java String Decamel Case deCamelCase(String identifier)

Description

de Camel Case

License

Apache License

Declaration

public static String deCamelCase(String identifier) 

Method Source Code

//package com.java2s;
/* Copyright (c) 2014, Effektif GmbH.
 * /*from w w w .  j  a va2 s .  c  o  m*/
 * 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 {
    public static String deCamelCase(String identifier) {
        if (identifier == null || identifier.isEmpty()) {
            return null;
        }
        StringBuilder nameBuilder = new StringBuilder();
        for (int i = 0; i < identifier.length(); i++) {
            char c = identifier.charAt(i);
            if (i == 0) {
                nameBuilder.append(Character.toUpperCase(c));
            } else if (!Character.isLowerCase(c)) {
                nameBuilder.append(" ");
                nameBuilder.append(Character.toUpperCase(c));
            } else {
                nameBuilder.append(c);
            }
        }
        return nameBuilder.toString();
    }

    public static String toString(Object o) {
        return o != null ? o.toString() : "null";
    }
}

Related

1. decamel(String name)
2. deCamelCap(String s)
3. deCamelCase(final String original)
4. deCamelCase(String camelCased, String delim)
5. deCamelCaseStyle(String style)
6. decamelise(String testName)
7. decamelize(final String s)
8. decamelize(String s)