src/main/java/org/apache/commons/daemon/DaemonInitException.java

/*
 *  Copyright 2010 Media Service Provider Ltd
 *
 *  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./*
 *
 */
package org.apache.commons.daemon;

/**
 * Throw this during init if you can't initialise yourself for some expected 
 * reason.  Using this exception will cause the exception's message to come out
 * on stdout, rather than a dirty great stacktrace.
 * @author Nick Griffiths (nicobrevin@gmail.com)
 * @version $Id$
 */
public class DaemonInitException extends Exception {

  private static final long serialVersionUID = 5665891535067213551L;

  //don't rely on Throwable#getCause (jdk1.4)
  private final Throwable cause;

  public DaemonInitException(String message) {
    super(message);
    this.cause = null;
  }

  public DaemonInitException(String message, Throwable cause) {
    super(message);
    this.cause = cause;
  }

  public String getMessageWithCause() {
    String extra = this.cause == null ? "" : ": " + this.cause.getMessage();
    return getMessage() + extra;
  }

}