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There is a newer version: 2.11.0
/*
 * Copyright 2023 the original author or authors.
 *
 * Licensed 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.seppiko.commons.utils;

import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Objects;
import java.util.function.Supplier;

/**
 * Array Util
 *
 * @see Arrays
 * @author Leonard Woo
 */
public class ArrayUtil {

  private ArrayUtil() {}

  /**
   * Returns {@code true} if the provided reference is array,
   * otherwise returns {@code false}.
   *
   * @param obj a reference to be checked against.
   * @param  reference type.
   * @return {@code true} if the provided reference is array, otherwise {@code false}.
   */
  public static  boolean isArray(T obj) {
    return Objects.nonNull(obj) && obj.getClass().isArray();
  }

  /**
   * Returns {@code true} if the array is {@code null},
   * otherwise returns {@code false}.
   *
   * @param array a reference to be checked against.
   * @param  reference type.
   * @return {@code true} if the provided array is {@code null}, otherwise {@code false}.
   */
  public static  boolean isEmpty(T[] array) {
    return (isNull(array) || array.length == 0);
  }

  /**
   * Returns {@code true} if the provided reference is {@code null},
   * otherwise returns {@code false}.
   *
   * @param obj a reference to be checked against {@code null}.
   * @param  reference type.
   * @return {@code true} if the provided reference is {@code null}, otherwise {@code false}.
   */
  public static  boolean isNull(T[] obj) {
    return null == obj;
  }

  /**
   * Returns {@code true} if the provided reference is non-{@code null},
   * otherwise returns {@code false}.
   *
   * @param obj a reference to be checked against {@code null}.
   * @param  reference type.
   * @return {@code true} if the provided reference is non-{@code null}, otherwise {@code false}.
   */
  public static  boolean nonNull(T[] obj) {
    return null != obj;
  }

  /**
   * Swap T array index a and b.
   *
   * @param oriTs origin T array.
   * @param a first index.
   * @param b second index.
   * @return swap result.
   * @param  Object type.
   */
  public static  T[] swap(T[] oriTs, int a, int b) {
    T tmp = oriTs[a];
    oriTs[a] = oriTs[b];
    oriTs[b] = tmp;
    return oriTs;
  }

  /**
   * Get Supplier object with not null array.
   *
   * @param suppliers supplier array.
   * @return object array.
   * @throws NullPointerException supplier array is {@code null}.
   */
  public static Object[] getSuppliers(Supplier