Java String Camel Case to Upper Case camelCaseToUpperCase(String camelCaseName)

Description

camel Case To Upper Case

License

Apache License

Parameter

Parameter	Description
camelCaseName	a parameter

Declaration

public static String camelCaseToUpperCase(String camelCaseName) 

Method Source Code

//package com.java2s;
/*//from  w  w w.j a v a  2  s.  c  o  m
 * Copyright 2012 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 {
    /**
    *
    * @param camelCaseName
    * @return
    */
    public static String camelCaseToUpperCase(String camelCaseName) {
        StringBuilder upperCaseName = new StringBuilder();

        boolean prevCharIsNumber = false;

        for (int i = 0; i < camelCaseName.length(); i++) {
            char c = camelCaseName.charAt(i);

            if (i > 0 && c >= 'A' && c <= 'Z') {
                upperCaseName.append("_").append(c);
                prevCharIsNumber = false;
            } else if (c >= '0' && c <= '9') {
                if (prevCharIsNumber) {
                    upperCaseName.append(c);
                } else {
                    upperCaseName.append('_').append(c);
                    prevCharIsNumber = true;
                }
            } else {
                prevCharIsNumber = false;
                upperCaseName.append(Character.toUpperCase(c));
            }
        }

        return upperCaseName.toString();
    }
}

Related

1. camelCaseToUpperCase(final String camelCase)
2. camelCaseToUpperCase(String in)
3. camelToUpper(String camel)
4. camelToUpper(String name)
5. camelToUpper(String s)