| /* |
| * Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"). |
| * You may not use this file except in compliance with the License. |
| * A copy of the License is located at |
| * |
| * http://aws.amazon.com/apache2.0 |
| * |
| * or in the "license" file accompanying this file. This file 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. |
| */ |
| package com.amazonaws.util; |
| |
| import java.nio.charset.Charset; |
| |
| /** |
| * Utilities for converting objects to strings. |
| */ |
| public class StringUtils { |
| |
| private static final String DEFAULT_ENCODING = "UTF-8"; |
| |
| public static final Charset UTF8 = Charset.forName(DEFAULT_ENCODING); |
| |
| /** |
| * A null-safe trim method. If the input string is null, returns null; |
| * otherwise returns a trimmed version of the input. |
| */ |
| public static String trim(String value) { |
| if (value == null) { |
| return null; |
| } |
| return value.trim(); |
| } |
| |
| /** |
| * @return true if the given value is either null or the empty string |
| */ |
| public static boolean isNullOrEmpty(String value) { |
| return value == null || value.isEmpty(); |
| } |
| } |