Android String Capitalize capitalize(String str)

Description

capitalize

License

Apache License

Declaration

public static String capitalize(String str) 

Method Source Code

//package com.java2s;
/**/* w  w  w .  ja v  a 2s. c om*/
 * Copyright 2013 ??????
 *
 * 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 final String EMPTY = "";

    public static String capitalize(String str) {
        if (str == null) {
            return null;
        }
        char[] charArray = str.toCharArray();
        if (charArray.length > 0) {
            charArray[0] = Character.toUpperCase(charArray[0]);
        }
        return new String(charArray);
    }

    public static String toUpperCase(String str) {
        if (str == null) {
            return null;
        }
        return str.toUpperCase();
    }

    public static String toUpperCase(String str, int beginIndex,
            int endIndex) {
        if (str == null) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        if (beginIndex < 0) {
            beginIndex = 0;
        }
        if (endIndex > str.length()) {
            endIndex = str.length();
        }
        if (beginIndex > 0) {
            sb.append(str.substring(0, beginIndex));
        }
        sb.append(str.substring(beginIndex, endIndex).toUpperCase());
        if (endIndex < str.length()) {
            sb.append(str.substring(endIndex));
        }
        return sb.toString();
    }

    public static String substring(String str, int beginIndex) {
        if (str == null) {
            return null;
        }

        if (beginIndex < 0) {
            return EMPTY;
        }

        if (beginIndex > str.length()) {
            return EMPTY;
        }

        return str.substring(beginIndex);
    }

    public static String substring(String str, int beginIndex, int endIndex) {
        if (str == null) {
            return null;
        }

        if (beginIndex < 0 || endIndex < 0) {
            return EMPTY;
        }

        if (endIndex > str.length()) {
            endIndex = str.length();
        }

        if (beginIndex > endIndex || beginIndex > str.length()) {
            return EMPTY;
        }

        return str.substring(beginIndex, endIndex);
    }
}

Related

1. capitalizeFirstLetter(String word)
2. capitalize(String s)
3. uncapitalize(String str)
4. capitalize(String s)
5. capitalizeFirstLetter(String src)
6. capitalize(String s)