dubbo ArrayUtils 源码
dubbo ArrayUtils 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/utils/ArrayUtils.java
/*
* 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) {
return -1;
} else {
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;
}
}
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