Java String Camel Case to Upper Case camelToUpper(String name)

Description

Converts a camelCase name into an upper-case underscore-separated name.

License

Apache License

Declaration

public static String camelToUpper(String name) 

Method Source Code

//package com.java2s;
/*//ww  w .  ja  va  2s. co  m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you 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 {
    /**
     * Converts a camelCase name into an upper-case underscore-separated name.
     * For example, {@code camelToUpper("myJdbcDriver")} returns
     * "MY_JDBC_DRIVER".
     */
    public static String camelToUpper(String name) {
        StringBuilder buf = new StringBuilder();
        for (int i = 0; i < name.length(); i++) {
            char c = name.charAt(i);
            if (Character.isUpperCase(c)) {
                buf.append('_');
            } else {
                c = Character.toUpperCase(c);
            }
            buf.append(c);
        }
        return buf.toString();
    }
}

Related

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