crazyboblee | 66b415a | 2006-08-25 02:01:19 +0000 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2006 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
kevinb9n | cad2c2b | 2007-05-15 17:28:03 +0000 | [diff] [blame] | 17 | package com.google.inject.internal; |
crazyboblee | 66b415a | 2006-08-25 02:01:19 +0000 | [diff] [blame] | 18 | |
| 19 | /** |
| 20 | * String utilities. |
| 21 | * |
| 22 | * @author crazybob@google.com (Bob Lee) |
| 23 | */ |
| 24 | public class Strings { |
| 25 | |
| 26 | /** |
| 27 | * Returns a string that is equivalent to the specified string with its |
| 28 | * first character converted to uppercase as by {@link String#toUpperCase}. |
| 29 | * The returned string will have the same value as the specified string if |
| 30 | * its first character is non-alphabetic, if its first character is already |
| 31 | * uppercase, or if the specified string is of length 0. |
| 32 | * |
| 33 | * <p>For example: |
| 34 | * <pre> |
| 35 | * capitalize("foo bar").equals("Foo bar"); |
| 36 | * capitalize("2b or not 2b").equals("2b or not 2b") |
| 37 | * capitalize("Foo bar").equals("Foo bar"); |
| 38 | * capitalize("").equals(""); |
| 39 | * </pre> |
| 40 | * |
| 41 | * @param s the string whose first character is to be uppercased |
| 42 | * @return a string equivalent to <tt>s</tt> with its first character |
| 43 | * converted to uppercase |
| 44 | * @throws NullPointerException if <tt>s</tt> is null |
| 45 | */ |
| 46 | public static String capitalize(String s) { |
| 47 | if (s.length() == 0) |
| 48 | return s; |
| 49 | char first = s.charAt(0); |
| 50 | char capitalized = Character.toUpperCase(first); |
| 51 | return (first == capitalized) |
| 52 | ? s |
| 53 | : capitalized + s.substring(1); |
| 54 | } |
| 55 | } |