| /* |
| * 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. |
| */ |
| |
| package org.apache.dubbo.common.utils; |
| |
| /** |
| * Contains some methods to check array. |
| */ |
| public final class ArrayUtils { |
| |
| private ArrayUtils() { |
| } |
| |
| /** |
| * <p>Checks if the array is null or empty. <p/> |
| * |
| * @param array th array to check |
| * @return {@code true} if the array is null or empty. |
| */ |
| public static boolean isEmpty(final Object[] array) { |
| return array == null || array.length == 0; |
| } |
| |
| /** |
| * <p>Checks if the array is not null or empty. <p/> |
| * |
| * @param array th array to check |
| * @return {@code true} if the array is not null or empty. |
| */ |
| public static boolean isNotEmpty(final Object[] array) { |
| return !isEmpty(array); |
| } |
| |
| public static boolean contains(final String[] array, String valueToFind) { |
| return indexOf(array, valueToFind, 0) != -1; |
| } |
| |
| public static int indexOf(String[] array, String valueToFind, int startIndex) { |
| if (!isEmpty(array) && valueToFind != null) { |
| if (startIndex < 0) { |
| startIndex = 0; |
| } |
| |
| for (int i = startIndex; i < array.length; ++i) { |
| if (valueToFind.equals(array[i])) { |
| return i; |
| } |
| } |
| |
| } |
| return -1; |
| } |
| |
| /** |
| * Convert from variable arguments to array |
| * |
| * @param values variable arguments |
| * @param <T> The class |
| * @return array |
| * @since 2.7.9 |
| */ |
| public static <T> T[] of(T... values) { |
| return values; |
| } |
| } |