1 package installer;
2 import java.io.PrintStream;
3 import java.io.FileOutputStream;
4 
5 import java.util.Date;
6 import java.text.DateFormat;
7 import java.text.SimpleDateFormat;
8 
9 
10 //import java.io.PrintWriter;
11 public class LogStream extends PrintStream
12 {
13     static final private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z: ");
14 
15     private String getTimeStamp()
16     {
17          String timeStamp = formatter.format( new Date() );
18          return timeStamp;
19     }
20     public LogStream( String logFileName ) throws java.io.FileNotFoundException
21     {
22         super( new FileOutputStream( logFileName ) );
23     }
24     public  void println(String x)
25     {
26         super.println( getTimeStamp() + x );
27     }
28     public static void main(String[] args)
29     {
30         if ( args.length > 0 )
31         {
32             try
33             {
34                 LogStream log = new LogStream( args[0] );
35                 System.setErr(log);
36                 System.setOut(log);
37                 System.out.println("Test from logger from out");
38                 System.err.println("Test from logger from err");
39                 System.out.println("finised test from out");
40                 System.err.println("finised test from err");
41             }
42             catch( java.io.FileNotFoundException fe )
43             {
44                 System.err.println("Error creating logStream: " + fe );
45                 fe.printStackTrace();
46             }
47         }
48         else
49         {
50             System.err.println("specify log file java LogStream [logfile]");
51             System.exit(1);
52         }
53     }
54 }
55