Java String Camel Case Format toCamelCase(String original)

Description

Transform a string to the camel case conversion.

License

LGPL

Declaration

public static String toCamelCase(String original) 

Method Source Code

//package com.java2s;
/*/*from ww  w .j a va 2 s  .co  m*/
 * Copyright (C) 2007-2010 J?lio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2016 The JavaParser Team.
 *
 * This file is part of JavaParser.
 *
 * JavaParser can be used either under the terms of
 * a) 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.
 * b) the terms of the Apache License
 *
 * You should have received a copy of both licenses in LICENCE.LGPL and
 * LICENCE.APACHE. Please refer to those files for details.
 *
 * JavaParser 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.
 */

public class Main {
    /**
     * Transform a string to the camel case conversion.
     * <p>
     * For example "ABC_DEF" becomes "abcDef"
     */
    public static String toCamelCase(String original) {
        StringBuilder sb = new StringBuilder();
        String[] parts = original.toLowerCase().split("_");
        for (int i = 0; i < parts.length; i++) {
            sb.append(i == 0 ? parts[i] : capitalize(parts[i]));
        }
        return sb.toString();
    }

    private static String capitalize(String original) {
        if (original.length() < 1) {
            throw new IllegalArgumentException("This string is empty");
        } else if (original.length() == 1) {
            return original.toUpperCase();
        } else {
            return original.substring(0, 1).toUpperCase() + original.substring(1);
        }
    }
}

Related

1. toCamelCase(String name)
2. toCamelCase(String name)
3. toCamelCase(String name)
4. toCamelCase(String name)
5. toCamelCase(String name)
6. toCamelCase(String originalName)
7. toCamelCase(String origString)
8. toCamelCase(String s)
9. toCamelCase(String s)