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Simplify the code of StringUtils to make it more graceful. (#2740)
* Simplify the code of StringUtils to make it more graceful. * Add Apache license
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dubbo-common/src/main/java/org/apache/dubbo/common/utils/ArrayUtils.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.dubbo.common.utils; | ||
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| /** | ||
| * Contains some methods to check array. | ||
| */ | ||
| public final class ArrayUtils { | ||
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| private ArrayUtils() { | ||
| } | ||
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| /** | ||
| * <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; | ||
| } | ||
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| /** | ||
| * <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); | ||
| } | ||
| } |
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dubbo-common/src/test/java/org/apache/dubbo/common/utils/ArrayUtilsTest.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.dubbo.common.utils; | ||
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| import static junit.framework.TestCase.assertFalse; | ||
| import static junit.framework.TestCase.assertTrue; | ||
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| import org.junit.Test; | ||
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| public class ArrayUtilsTest { | ||
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| @Test | ||
| public void isEmpty() throws Exception { | ||
| assertTrue(ArrayUtils.isEmpty(null)); | ||
| assertTrue(ArrayUtils.isEmpty(new Object[0])); | ||
| assertFalse(ArrayUtils.isEmpty(new Object[]{"abc"})); | ||
| } | ||
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| @Test | ||
| public void isNotEmpty() throws Exception { | ||
| assertFalse(ArrayUtils.isNotEmpty(null)); | ||
| assertFalse(ArrayUtils.isNotEmpty(new Object[0])); | ||
| assertTrue(ArrayUtils.isNotEmpty(new Object[]{"abc"})); | ||
| } | ||
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| } |
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