// Path: src/main/java/org/fest/util/Preconditions.java
// public static @NotNull <T> T checkNotNull(@Nullable T reference) {
//   if (reference == null) {
//     throw new NullPointerException();
//   }
//   return reference;
// }


import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.List;
import static org.fest.util.Preconditions.checkNotNull;
/*
 * Created on May 13, 2007
 * 
 * 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.
 * 
 * Copyright @2007-2013 the original author or authors.
 */
package org.fest.util;




/**
 * Utility methods related to arrays.
 *
 * @author Alex Ruiz
 * @author Joel Costigliola
 */
public class Arrays {
  private static final ArrayFormatter FORMATTER = new ArrayFormatter();

  private Arrays() {
  }

  /**
   * Indicates whether the given object is not {@code null} and is an array.
   *
   * @param o the given object.
   * @return {@code true} if the given object is not {@code null} and is an array, otherwise {@code false}.
   */
  public static boolean isArray(@Nullable Object o) {
    return o != null && o.getClass().isArray();
  }

  /**
   * Indicates whether the given array is {@code null} or empty.
   *
   * @param <T>   the type of elements of the array.
   * @param array the array to check.
   * @return {@code true} if the given array is {@code null} or empty, otherwise {@code false}.
   */
  public static <T> boolean isNullOrEmpty(@Nullable T[] array) {
    return array == null || !hasElements(array);
  }

  /**
   * Returns an array containing the given arguments.
   *
   * @param <T>    the type of the array to return.
   * @param values the values to store in the array.
   * @return an array containing the given arguments.
   */
  public static @NotNull <T> T[] array(@NotNull T... values) {
// Path: src/main/java/org/fest/util/Preconditions.java
// public static @NotNull <T> T checkNotNull(@Nullable T reference) {
//   if (reference == null) {
//     throw new NullPointerException();
//   }
//   return reference;
// }


// Path: src/main/java/org/fest/util/Arrays.java
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.List;
import static org.fest.util.Preconditions.checkNotNull;

/*
 * Created on May 13, 2007
 * 
 * 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.
 * 
 * Copyright @2007-2013 the original author or authors.
 */
package org.fest.util;




/**
 * Utility methods related to arrays.
 *
 * @author Alex Ruiz
 * @author Joel Costigliola
 */
public class Arrays {
  private static final ArrayFormatter FORMATTER = new ArrayFormatter();

  private Arrays() {
  }

  /**
   * Indicates whether the given object is not {@code null} and is an array.
   *
   * @param o the given object.
   * @return {@code true} if the given object is not {@code null} and is an array, otherwise {@code false}.
   */
  public static boolean isArray(@Nullable Object o) {
    return o != null && o.getClass().isArray();
  }

  /**
   * Indicates whether the given array is {@code null} or empty.
   *
   * @param <T>   the type of elements of the array.
   * @param array the array to check.
   * @return {@code true} if the given array is {@code null} or empty, otherwise {@code false}.
   */
  public static <T> boolean isNullOrEmpty(@Nullable T[] array) {
    return array == null || !hasElements(array);
  }

  /**
   * Returns an array containing the given arguments.
   *
   * @param <T>    the type of the array to return.
   * @param values the values to store in the array.
   * @return an array containing the given arguments.
   */
  public static @NotNull <T> T[] array(@NotNull T... values) {
    return checkNotNull(values);