Returns the package portion of the specified class : Package « Reflection « Java Tutorial

1. Java Tutorial
2. Reflection
3. Package

public class Utils {
  /**
   * Returns the package portion of the specified class
   * @param className the name of the class from which to extract the package
   * @return package portion of the specified class
   */
  public static String getPackageName(final String className) {
      if (className != null) {
          final int index = className.lastIndexOf('.');

          return ((index != -1) ? className.substring(0, index) : ""); // NOI18N
      }

      return null;
  }
}