content: /*
   * Created on Apr 15, 2008
   * 
   * 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 @2008-2013 the original author or authors.
   */
  package org.fest.swing.util;
  
  import static org.fest.util.Preconditions.checkNotNullOrEmpty;
  import static org.fest.util.Strings.concat;
  import static org.fest.util.Strings.quote;
  
  import java.awt.Color;
  
  import javax.annotation.Nonnull;
  
  /**
   * Utility methods related to colors.
   * 
   * @author Alex Ruiz
   */
  public final class Colors {
    /**
     * Returns a {@code Color} from the given {@code String} containing the hexadecimal coding of a color.
     * 
     * @param hexString contains the hexadecimal coding of a color.
     * @return a {@code Color} from the given {@code String} containing the hexadecimal coding of a color.
     * @throws NullPointerException if the hexadecimal code is {@code null}.
     * @throws IllegalArgumentException if the hexadecimal code is empty.
     * @throws NumberFormatException if the hexadecimal code is empty.
     */
    public static @Nonnull Color colorFromHexString(@Nonnull String hexString) {
      checkNotNullOrEmpty(hexString);
      try {
        return new Color(Integer.parseInt(hexString, 16));
      } catch (NumberFormatException e) {
        throw new NumberFormatException(concat("The hexadecimal code ", quote(hexString), " is not a valid color code"));
      }
    }
  
    private Colors() {}
  }
  