log.java

来自「java编的邮件客户端」· Java 代码 · 共 77 行

package mfetcher;

//
// Log
//
// 17.01.1999 John Mettraux
//

//
// Copyright (C) 1999 John Mettraux
//
// 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.
//
// 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, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//

import java.io.*;

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


public class Log
{
//
// DATAS

    PrintWriter printWriter;
    
    SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy HHmm");

//
// CONSTRUCTORS

    public Log (String fileName)
        throws IOException
    {
        printWriter = 
            new PrintWriter(new FileWriter(fileName, true));
    }
    
    public Log (File f)
        throws IOException
    {
        printWriter =
            new PrintWriter(new FileWriter(f));
    }

//
// PUBLIC METHODS

    public void write (String line)
    {
        String prefix = sdf.format(new Date(System.currentTimeMillis()));
        prefix += " - ";
        printWriter.println(prefix+line);
        printWriter.flush();
    }

//
// METHODS

    protected void finalize ()
        throws IOException
    {
        printWriter.close();
    }
}