}

public
class IllegalArgumentException extends RuntimeException {
    /**
     * Constructs an <code>IllegalArgumentException</code> with no
     * detail message.
     */
    public IllegalArgumentException() {
        super();
    }


    /**
     * Constructs an <code>IllegalArgumentException</code> with the
     * specified detail message.
     *
     * @param   s   the detail message.
     */
    public IllegalArgumentException(String s) {
        super(s);
    }


    /**
     * Constructs a new exception with the specified detail message and
     * cause.
     *
     * <p>Note that the detail message associated with <code>cause</code> is
     * <i>not</i> automatically incorporated in this exception's detail
     * message.
     *
     * @param  message the detail message (which is saved for later retrieval
     *         by the {@link Throwable#getMessage()} method).
     * @param  cause the cause (which is saved for later retrieval by the
     *         {@link Throwable#getCause()} method).  (A <tt>null</tt> value
     *         is permitted, and indicates that the cause is nonexistent or
     *         unknown.)
     * @since 1.5
     */
    public IllegalArgumentException(String message, Throwable cause) {
        super(message, cause);
    }


    /**
     * Constructs a new exception with the specified cause and a detail
     * message of <tt>(cause==null ? null : cause.toString())</tt> (which
     * typically contains the class and detail message of <tt>cause</tt>).
     * This constructor is useful for exceptions that are little more than
     * wrappers for other throwables (for example, {@link
     * java.security.PrivilegedActionException}).
     *
     * @param  cause the cause (which is saved for later retrieval by the
     *         {@link Throwable#getCause()} method).  (A <tt>null</tt> value is
     *         permitted, and indicates that the cause is nonexistent or
     *         unknown.)
     * @since  1.5
     */
    public IllegalArgumentException(Throwable cause) {
        super(cause);
    }


    private static final long serialVersionUID = -5365630128856068164L;
}

例子：

public class UnauthorizedServiceException
  extends RuntimeException
{
  private static final long serialVersionUID = 3905807495715960369L;
  public static final String CODE_UNAUTHZ_SERVICE = "screen.service.error.message";
  public static final String CODE_EMPTY_SVC_MGMR = "screen.service.empty.error.message";
  private String code = null;
  
  public UnauthorizedServiceException(String message)
  {
    super(message);
  }
  
  public UnauthorizedServiceException(String code, String message)
  {
    this(message);
    this.code = code;
  }
  
  public UnauthorizedServiceException(String message, Throwable cause)
  {
    super(message, cause);
  }
  
  public final String getCode()
  {
    return this.code;
  }

}

在别的地方的使用：

 if (registeredService == null)
    {
      String msg = String.format("ServiceManagement: Unauthorized Service Access. Service [%s] is not found in service registry.", new Object[] { service.getId() });
      
      this.logger.warn(msg);
      throw new UnauthorizedServiceException("screen.service.error.message", msg);
    }