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The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

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/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU 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 .
 */

/*
 *    SysErrLog.java
 *    Copyright (C) 1999-2012 University of Waikato, Hamilton, New Zealand
 *
 */


package weka.gui;

import java.text.SimpleDateFormat;
import java.util.Date;

/** 
 * This Logger just sends messages to System.err.
 *
 * @author Len Trigg ([email protected])
 * @version $Revision: 8034 $
 */
public class SysErrLog implements Logger {

  /**
   * Gets a string containing current date and time.
   *
   * @return a string containing the date and time.
   */
  protected static String getTimestamp() {

    return (new SimpleDateFormat("yyyy.MM.dd hh:mm:ss")).format(new Date());
  }

  /**
   * Sends the supplied message to the log area. The current timestamp will
   * be prepended.
   *
   * @param message a value of type 'String'
   */
  public void logMessage(String message) {
    
    System.err.println("LOG " + SysErrLog.getTimestamp() + ": "
		       + message);
  }

  /**
   * Sends the supplied message to the status line.
   *
   * @param message the status message
   */
  public void statusMessage(String message) {

    System.err.println("STATUS: " + message);
  }
}