ArrayTools.java

/*
 * Copyright (C) 2011 Laurent Caillette
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.novelang.outfit;

/**
 * Does things with arrays.
 *
 * @author Laurent Caillette
 */
public class ArrayTools {


  private ArrayTools() {
  }

  /**
   * Returns the first non-null value or null if all were null.
   *
   * @param values a non-null array that may contain nulls.
   * @return a possibly null value if all {@code values} were null.
   */
  public static< T > T firstNotNull( final T... values ) {
    for( final T value : values ) {
      if( value != null ) {
        return value ;
      }
    }
    return null ;
  }

}